2018USACO铜级第一题(翻译)

2018USACO铜级第一题(翻译)
2018USACO铜级第一题(翻译)

https://www.360docs.net/doc/b54569347.html,

USACO 2017年首轮月赛铜级题1

遮挡的广告牌

在漫长的挤奶季中,名叫Bessie的奶牛喜欢透过奶牛棚的窗户凝视街对面墙上的两块长方形广告牌。广告是个图片,图片上有两头奶牛在吃苜蓿和谷物,并配了两行字’Alex种的美味苜蓿,Greg种的优质谷物’。Bessie觉得图上奶牛吃的东西比自己的牧场食物更美味。

一天,Bessie正在往窗外看,突然有一个卡车挡在广告牌前面。卡车一侧印着一则广告语:Smith农场出品优质牛排。Bessie并不理解这广告语的意思,她还一心地想着那个被挡住的两块广告牌。

给定两块广告牌和卡车的位置,请计算两块广告牌均可见的总面积。而其中的卡车可能遮挡住其中的一个或者两个广告牌,或者一个都不遮挡。

输入格式(file billboard.in):

第一行输入4个空间分离的整数坐标x1,y1,x2,y2.其中(x1,y1)和(x2,y2)是Bessie二维视角下第一块广告牌的左下角和右上角的坐标,第二行包括另外四个整数,与第一行类似定义第二块广告牌的左下角和右上角坐标。第三行和最后一行输入四个整数定义卡车左下角和右上角的坐标。所有的坐标取值范围在-1000到+1000。两个广告牌之间确定没有重叠。

输出格式(file billboard.out):

请输出两个广告牌可见的区域总面积。

样例输入:

1235

60104

2183

样例输出:

17

在本例中,第一块广告牌的剩余可见面积为5,第二块广告牌的剩余可见面积为12。

考研英语:翻译真题精讲(1)

考研英语:翻译真题精讲(1) 一、全真试题 The standardized educational or psychological tests that are widely used to aid in selecting,classifying,assigning,or promoting students,employees,and military personnel have been the target of recent attacks in books,magazines,the daily press,and even in Congress.(71)The target is wrong,for in attacking the tests,critics divert attention from the fault that lies with ill-informed or incompetent users. The tests themselves are merely tools,with characteristics that can be measured with reasonable precision under specified conditions. Whether the results will be valuable,meaningless,or even misleading depends partly upon the tool itself but largely upon the user. All informed predictions of future performance are based upon some knowledge of relevant past performance: school grades,research productivity,sales records,or whatever is appropriate.(72)How well the predictions will be validated by later performance depends upon the amount,reliability,and appropriateness of the information used and on the skill and wisdom with which it is interpreted. Anyone who keeps careful score knows that the information available is always incomplete and that the predictions are always subject to error. Standardized tests should be considered in this context. They provide a quick objective method of getting some kinds of information about what a person learned,the skills he has developed,or the kind of person he is. The information so obtained has,qualitatively,the same advantages and shortcomings as other kinds of information.(73)Whether to use tests,other kinds of information,or both in a particular situation depends,therefore,upon the evidence from experience concerning comparative validity and upon such factors as cost and availability. (74)In general, the tests work most effectively when the qualities to be measured can be most precisely defined and least effectively when what is to be measured or predicated cannot be well defined. Properly used,they provide a rapid means of getting comparable information about many people. Sometimes they identify students whose high potential has not been previously recognized,but there are many things they do not do.(75)For example,they do not compensate for gross social inequality,and thus do not tell how able an underprivileged youngster might have been had he grown up under more favorable circumstances. 二、翻译题解 (71)The targetiswrong,forin attacking the tests, criticsdivertattention from the faultthatlies withill-informed or incompetent users.

最新四六级翻译题(附答案)

2017年12月英语四六级翻译真题 英语四级翻译真题:泰山 泰山位于山东省西部。海拔1500余米,方圆约400平方公里。泰山不仅雄伟壮观,而且是一座历史文化名山,过去3000多年一直是人们前往朝拜的地方。据记载,共有72位帝王曾来此游览。许多作家到泰山获取灵感,写诗作文,艺术家也来此绘画。山上因此留下了许许多多的文物古迹。泰山如今已成为中国一处主要的旅游景点。 英语四级翻译真题:华山 华山位于华阴市,距西安120公里。华山是秦岭的一部分。秦岭不仅分割陕南与陕北,也分隔华南与华北。与从前人们常去朝拜的泰山不同。华山过去很少有人光临。因为上山的道路极其危险。然而,希望长寿的人却经常上山,因为山上生长着许多药草,特别是一些稀有的药草。自上世纪90年代安装缆车以来,参观人数大大增加。 英语四级翻译真题:黄山 黄山位于安徽省南部。它风景独特,尤以其日出和云海著称。要欣赏大山的宏伟壮丽,通常得向上看。但要欣赏黄山美景,就得向下看。黄山的湿润气候有利于茶树生长,是中国主要产茶地之一。这里还有许多温泉,其泉水有助于防治皮肤病。黄山是中国主要旅游目的地之一,也是摄影和传统国画最受欢迎的主题。 英语六级翻译真题:青海湖 青海湖位于海拔3205米、青海省省会西宁以西约100公里处。是中国最大的咸水湖,面积4317平方公里,最深处25.5米,有23条河注入湖中,其中大部分是季节性的。百分之八十的湖水源于五条主要河流。青海湖位于跨越亚洲的几条候鸟迁徙路线的交叉处。许多鸟类把青海湖作为迁徙过程中的暂息地,湖的西侧是著名的“鸟岛”,吸引着来自世界各地的观鸟者。每年夏天,游客们也来这里观看国际自行车比赛。 英语六级翻译真题:洞庭湖 洞庭湖位于湖南省东北部,面积很大,但湖水很浅。洞庭湖是长江的蓄洪池,湖的大小很大程度上取决于季节变化,湖北和湖南两省因其与湖的相对位置而得名,湖北意为“湖的北边”,而湖南则为“湖的南边”。洞庭湖作为龙舟赛的发源地,在中国文化中享有盛名。据说龙舟赛始于洞庭湖东岸。为的是搜寻楚国爱国诗人屈原的遗体。龙舟赛与洞庭湖及周边的美景,每年都吸引着成千上万来自全国和世界各地的游客。 英语六级翻译真题:太湖 太湖是中国东部的一个淡水湖,占地面积2250平方公里,是中国第三大淡水湖,仅次于鄱阳和洞庭,太湖约有90个岛屿,大小从几平方米到几平方公里不等。太湖以其独特的“太湖石”而闻名,太湖石常用于装饰中国传统园林。太湖也以高产的捕鱼业而闻名。自上世纪70年代后期以来,捕捞鱼蟹对沿湖的

2005年-2016年考研英语一翻译真题汇总

05 It is not easy to talk about the role of the mass media in this overwhelmingly significant phase in European history. History and news become confused, and one's impressions tend to be a mixture of skepticism and optimism. (46)Television is one of the means by which these feelings are created and conveyed-and perhaps never before has it served to much to connect different peoples and nations as is the recent events in Europe .The Europe that is now forming cannot be anything other than its peoples, their cultures and national identities. With this in mind we can begin to analyze the European television scene. (47) In Europe, as elsewhere multi-media groups have been increasingly successful groups which bring together television, radio newspapers, magazines and publishing houses that work in relation to one another. One Italian example would be the Berlusconi group while abroad Maxwell and Murdoch come to mind. Clearly, only the biggest and most flexible television companies are going to be able to compete complete in such a rich and hotly-contested market. (48) This alone demonstrates that the television business is not an easy world to survive in a fact underlined by statistics that show that out of eighty European television networks no less than 50% took a loss in 1989. Moreover, the integration of the European community will oblige television companies to cooperate more closely in terms of both production and distribution. (49) Creating a "European identity" that respects the different cultures and traditions which go to make up the connecting fabric of the Old continent is no easy task and demands a strategic choice - that of producing programs in Europe for Europe. This entails reducing our dependence on the North American market, whose programs relate to experiences and cultural traditions which are different from our own. In order to achieve these objectives, we must concentrate more on co-productions, the exchange of news, documentary services and training. This also involves the agreements between European countries for the creation of a European bank will handle the finances necessary for production costs. (50) In dealing with a challenge on such a scale, it is no exaggeration to say "Unity we stand, divided we fall" -and if I had to choose a slogan it would be "Unity in our diversity." A unity of objectives that nonetheless respect the varied peculiarities of each country.

英语四六级翻译训练每日一题四月2

翻译原文: 其实我一点儿不排斥电脑,也享受着它的种种方便快捷,但每当我要给最亲近的人写信时还是喜欢用笔,因为我坚信字是有生命的,有情感的,在书写的同时,我生命的一部分也随之带走了,而打字则像是请人代笔,隔着一层什么,就像打电话时尽管你能清楚地听到对方的呼吸,可有些话就是怎么也说不出来,最后还是得借助笔纸,就是这么神奇,形式的不同、工具的不同,影响到内容的不同。 参考译文: Actually I do not reject the computer at all and alsoenjoy its every kind of conv enience.Butevery timewhen I want to write to my closet people,I would liketo u se a pen.Because I firmlybelieve that charactershave their life and emotion.Whe n writing,one part ofmy life is taking awaywith it.But typing is like hiring people t o write for you.It is separated bysomething just likealthough you can clearly he ar the breath of the addressee,some words youjust can't say themout at all.At la st you have to write with the help of pen and paper.It is somagic that differentfo rmats and different tools will influence the difference of context. 下面是2014年英语四级写作必备范文:出国留学。 Directions: For this part, you are allowed 30 minutes to write a short essay on t he topicStudying Abroad. You should write at least 120 words following the outli ne given below: 1)目前很多中国学生出国留学, 2)出国留学的好处, 3)我的看法。 Nowadays, going abroad for studies is enjoying a striking popularity among a dolescents.Importance should be attached to studying abroad. There are a great many advantages of studying overseas. First and foremost, liv ing andstudying abroad offers students a different perspective of the world. On a university campus,international students are likely to encounter their counte rparts from various countries andareas and are exposed to diverse ideas and v alues. What is more, overseas experience is thebest opportunity for the real-lif e use of foreign languages. There is no better opportunity toimprove second-la nguage skills than living in the country in which it is spoken. Generally peaking, it is my view that although going abroad is expensive and pe rhapspainful, the payoff is worthwhile. In the first place, in addition to knowle dge, overseasstudents can gain precious experiences that those who stay at ho me will never have.Furthermore, overseas experience, frustrating and painful as it may be, is conducive to thegrowth of adolescents. 参考译文: 目前,出国留学在年轻人中间非常流行。我们应该充分重视留学问题。 出国留学有很多好处。首先,国外生活和学习为学生提供了一个看待世界的不同视角。在大学校园中,国际学生很可能遇到来自不同国家和地区的同伴,并且面临迥异的观念和价值。此外,海外经历是外语在实际生活运用的最佳时机。没有什么比住在母语国家提高第二外语技能的更好机会了。 总之,我认为尽管出国留学很昂贵,并且可能会痛苦,但这种付出是值得的。首先,除了知识之外,留学生可以获得留在国内的学生永远无法获得的宝贵经验。其次,尽管留学经历可能使人沮丧痛苦,然而这对年轻人的成长是有益的。 翻译原文: 杭州是中国著名的六大古都之一,已有两千多年的历史。这个城市不仅以自然美闻名于世,而且有着传统的文化魅力。不仅有历代文人墨客的题咏,而且有美味佳肴和漂亮的工艺品。一般来说,游览杭州西湖及其周边景点花上两天较为合适。到杭州旅游,既令人愉快,又能得到文化享受。

历年英语六级翻译真题汇总

六级翻译 helj 2011/4/12 令狐采学 10/12) 82.There is no denying that you __________________________________ (越仔细越好) in dealing with this matter. 83.Only when I reached my thirties _____________________________(我才意识到读书是不能被忽视的). 84. Much _________________________________(使研究人员感到惊讶), the outcome of the experiment was far better than they had expected. 85. Oh, my, I can’t find my key; ______________________________(我一定是把它忘在哪儿了). 86. I ____________________________________________ (宁愿加入你们去做义工) than go to the beach for a holiday. (10\06) 82.___(他们的独生儿子从未想过) to leavethem and strike out on his own though he is in his late twenties. 83.Before you take any action, please remember to ___ (权衡你的决

定会产生的后果).84. He assured his friend that under no circumstances ___ (他会违背还钱的承诺).85. Most educators advise that kids ___ (不要沉溺于电脑游戏).86. Business major as he is, he has ___ (从未考虑过从事推销员工作). (09\12 ) 82. How long does a jacket like this last me? — (这要看你多长时间穿一次). 83. The theory he advanced has proved (对许多传统概念的一种挑战). 84. The manager (本可以亲自参加会议), but he was called away for some urgent business abroad. 85. Both research and practical experience have shown that a (均衡的饮食对健康是必不可少的). 86. Much (我感到遗憾), I was unable to finish the work on time. (09/06) 82.With the oil prices ever rising, she tried to talk ________ (说服他不买车). 83.________ (保持幽默有助于) reduce stress and promote creative thinking in today’s competitive society.. 84.When confronted with the evidence, ________ (他不得不坦白

考研英语一翻译真题解析

2017考研英语一翻译真题解析 跨考教育英语教研室—王坤2017年考研英语一的翻译题型部分,整体来说难度不大,与2016年难度基本持平,考察的是英语语言发展情况,文章选自英国文化教育协会的一本书,叫《英语下一步》。英语一的考题是此书的序言部分。下面就是跨考英语教研室的英语老师对2017年考研英语一翻译真题的最新解析和参考译文。 (46)But even as the number of English speakers expands further there are signs that the global predominance of the language may fade within the foreseeable future. 参考译文:但是,尽管使用英语者的人数在不断增加/说英语的人越来越多,却仍然有迹象表明,英语语言的全球主导地位在不久的将来/可预见的未来也许会慢慢衰退。 句子解析:本句很简单,主句是there be 结构,主句前是让步状语,signs 后面是that引导的同位语从句,对signs进行进一步的补充说明。同位语从句中是主谓结构,the global predominance of the language 是主语,may fade 是谓语,within结构是时间状语。expands的词义不应该选择常用的“扩展”意思,而应该结合前面和它搭配的number,而选择“增加”的意思。 (47)His analysis should therefore end any self-contentedness among those who may believe that the global position of English is so stable that the young generation of the United Kingdom do not need additional language capabilities.

四六级翻译真题及答案word版本

四六级翻译真题及答 案

中国的创新正以前所未有的速度蓬勃发展。为了在科学技术上尽快赶超世界发达国家,中国近年来大幅度增加了研究开发资金。中国的大学和研究所正在积极开展创新研究,这些研究覆盖了从大数据到生物化学,从新能源到机器人等各类高科技领域。它们还与各地的科技园合作,使创新成果商业化。与此同时,无论在产品还是商业模式上,中国企业家也在努力争做创新的先锋,以适应国内外消费市场不断变化和增长的需求。 译文一 China's innovation is flourishing faster than ever before. In order to surpass developed countries on progressing and technology as soon as possible, China has sharply increased research and development fund. Chinese universities and institutes are actively doing innovative researches, covering various fields of high technology, from big data to biochemistry, and from new energy to robots. They are also cooperating with science and technology parks in different places, progressing commercialize their fruits of innovation.In the meantime , to adapt to the changing foreign and domestic market, and to satisfy the growing demand, Chinese entrepreneurs are also making pioneering efforts to innovate their products and business models(模式). 译文二(文都版) Innovation is progressing in an unprecedented speed in China. In order to catch up with those developed countries in the world as fast as it can in the science and technology field, China has increased funds for development research substantially in recent years. Universities and research institutions in China are actively carrying out innovation researches, which cover high-

历年英语六级翻译试题及答案

2012年六月翻译题及答案 82. ____________________(他们的独生儿子从未想过) to leave them and strike out on his own though he is in his late twenties。 答案:Their only son has never thought 83. Before you take any action, please remember to _______________(权衡你的决定会产生的后果) 答案:weigh your decision against its possible consequences。 84. He assured his friend that under no circumstances _________________(他会违背还钱的承诺) 答案:would he break/breach his promise/commitment to pay back the money。 85. Most educators advise that kids ____________________ (不要沉溺于电脑游戏)。 答案:should not be addicted to computer games. / should not indulge themselves in computer games / should not abandon themselves to computer games。 86. Business major as he is, he has ____________________ (从未考虑过从事推销员的工作)。

2020年考研英语一翻译真题及答案解析

2020年考研英语一翻译真题及答案解析 2017年考研英语考试已经结束!出国留学考研网在考后第一时间 为大家提供2017年考研英语一翻译真题及答案解析,更多考研资讯 请关注我们网站的更新! 2017年考研英语一翻译真题及答案解析 英语1文章明显偏学术,今年考察英语语言发展情况,文章选的英国文化教育协会,是雅思出题组织者。它的主席叫大卫格兰多的 一本书,叫《英语下一步》,他讲到整本书意思是英语将走向何处。 很有意思的是主席曾经这本书里说到了中文将以后成为世界语言。英语1考题作为序言部分作为考题。 今年英语1总体难度和去年相比,刚刚过去2016年考研题稳中 有一点点上升,没有任何难句出现,只是长句。我认为稳中上升。 第一句话有一个单词难一点,(英文),英语全球性主导地位。翻译里没有考过。(英文)主导地位考过,但是是阅读里经常出现,翻 译都是可以的。这句话基本意思说到了,说英语的人进一步扩大, 这是一个(英文)状语从句。后面跟着有迹象表明,是主句,表明的 迹象是什么呢?从句,英语全球性主导地位在可预见地位将减弱。 fade(英文)略微有难度。我对考研阅读没有那么熟,但是2000 年出现过。如果按照新东方老师关注的精读方法来学习有很好的效果。 第二句话讲到了大卫这个人分析,会终结一些人的(英文),他们或许会认为英语全球性地位是如此稳定。他们有一次词,是(英语) 如此稳定,英国年轻一代不需要额外学习其他的语言能力。但是会 终结年轻一代的能力。 但是组织的时候要注意一下,有些人认为英语语言地位如此稳定,英国年轻人没有必要学习什么,但是大卫的观点会终结这些人的想法。语序颠倒一下会更好。

四六级翻译题 中国文化

【原文】中国人自古以来就在中秋时节庆祝丰收,这与北美地区庆祝感恩节的习俗十分相似,过中秋节的习俗与唐代早期在中国各地开始流行,中秋节在农历八月十五,是人们拜月的节日,这天夜晚皓月当空,人们合家团聚,共赏明月。2006年,中秋节被列为中国的文化遗产,2008年又被定为公共假日,月饼被视为中秋节不可或缺的美食,人们将月饼作为礼物馈赠亲友或在家庭聚会上享用。传统的月饼上带有“寿”(longevity)、“福”或“和”等字样。 【参考译文】Since ancient times, the Chinese people usually celebrate harvest in the Mid- Autumn, which is similar to the custom of celebrating Thanksgiving in the North America. The tradition of celebrating Mid-Autumn festival became popular throughout China in the early Tang dynasty. The lunar August 15 is a day for people worshiping the moon. On this day, under the dazzling bright moon, families reunite and enjoy the moon’s beauty. In 2006, Mid- Autumn festival was listed as one of China’s cultural heritage, and in 2008, it was classified as a public holiday. Moon cakes, as indispensable delicious food of the festival, were gifts people sent to families and friends during the festival and usually eaten on family gatherings. There are characters of “longevity”,“good fortune”and “harmony”on the Traditional moon cakes. Directions: For this part, you are allowed 30 minutes to translate a passage fr om Chinese into English. You should write your answer on Answer Sheet 2. 端午节,又叫龙舟节,是为了纪念爱国诗人屈原。屈原是一位忠诚和受人敬仰的大臣(minister),他给国家带来了和平和繁荣。但最后因为受到诽谤(vilify)而最终投河自尽。人们撑船到他自尽的地方,抛下粽子,希望鱼儿吃粽子,不要吃屈原的身躯。几千年来,端午节的特色在于吃粽子(glutinous dumplings)和赛龙舟,尤其是在一些河湖密布的南方省份。 参考译文: The Duanwu Festival, also called the Dragon Boat Festival, is to commemorate the patriotic poet Qu Yuan. Qu Yuan was a loyal and highly esteemed minister, who brought peace and prosperity to the state but ended up drowning himself in a river as a result of being vilified.People got to the spot by boat and cast glutinous dumplings into the water,hoping that the fishes ate the dumplings instead of Qu Yuan's body. For thousands of years, the festival has been marked by glutinous dumplings and dragon boat races, especially in the southern provinces where there are many rivers and lakes 剪纸(paper cutting)是中国最为流行的传统民间艺术形式之一。中国剪纸有一千五百多年的历史,在明朝和清朝时期(the Ming and Qing Dynasties)特别流行。人们常用剪纸美化居家环境。特别是在春节和婚庆期间,剪纸被用来装饰门窗和房间,以增加喜庆的气氛。剪纸最常用的颜色是红色,象征健康和兴旺。中国剪纸在世界各地很受欢迎,经常被用作馈赠外国友人的礼物 Paper cutting is one of China’s most popular traditional folk arts. Chinese paper cutting has a history of more than 1,500 years. It was widespread particularly during the Ming and Qing Dynasties. People often beautify their homes with paper cuttings. During the Spring Festival and wedding celebrations, in particular, paper cuttings

2019年6月大学英语六级翻译练习题:七夕

2019年6月大学英语六级翻译练习题库 英语六级翻译练习题:七夕 每年农历七月初七是中国的情人节(Valentine's Day )。关于这个节日有一个美丽的传说:王母娘娘(the Queen ofHeaven )最年幼的女儿“织女”爱上了人间的男子“牛郎”,王母反对仙女与凡人相爱,就用银河(Milky Way)将他们隔开。但牛郎和织女的爱情感动了人间的喜鹊(magpie),每年七月初七这一天,喜鹊会搭起一座鹊桥让这对情侣相见。而如今在这一天,年轻的女子常在月下向织女祈祷,期望得到美满的姻缘。 参考翻译: Chinese Valentine's Day The seventh day of the seventh month in the lunarcalendar is Chinese Valentine's Day. There is abeautiful legend about this festival: Zhi Nu, theyoungest daughter of the Queen of Heaven, fell inlove with Niu Lang, a cowherd on earth. Zhi Nu's mother was opposed to the love between afairy and a human, so she separated the two lovers with the Milky Way. However, their lovestory moved the magpies on earth. Those magpies gather together annually on the seventhday of the seventh lunar month to form a “magpie bridge”,so that the couple can meet eachother once in a year. Today, on this day, young girls often pray to Zhi Nu in the moonlight,wishing for a happy marriage. 1.农历:表示农历应该在“某月某日”后面加上in the lunarcalendar (因农历与月球的运转有关),或者简译为onthe...day of the...lunar month。 2.牛郎和织女:可翻译为the Cowherd and the GirlWeaver,因为是中国人物,也可以直译为汉语拼音,之后再用英文对其身份做补充说明。 3.人间:可翻译为earth,也可翻译为the human world。 4.用…隔开:应为 separate…with… 5.每年:除了译为every year以外,还可以用annually来表示,这里用annually比较恰当,强调一年一次。 6.在月下:若直译为under the moon则不够地道,可转译为“在月光中(in the moonlight)。 7.祈祷、期望:这是两个同时发生的动作,因而可使用现在分词wishing表示伴随,简化句子结构。

2020年考研《英语一》翻译真题答案(跨考版)

2020年考研《英语一》翻译真题答案(跨考版) 文章来源于An Outline of American History,《美国历史纲要》,是一本历史学方面的专著。 46 We don’t have to learn how to be mentally healthy; it is built into us in the same way that our bodies know how to heal a cut or mend a broken bone. 【句子结构】分号连接的两个并列句,第一个并列句主干是 We don’t have to learn ,how引导宾语从句做learn的宾语,第二个 并列句主干是it is built into us in the same way,that引导定 语从句修饰先行词way,that定语从句中主干是our bodies know,how引导宾语从句做know的宾语。 【参考译文】我们无需刻意去了解学习才能让心理更健康,它正 如我们的身体知道怎样让伤口愈合和修复骨折一样,是根植于我们体 内的/是我们与生俱来的水平。 47 Our mental health doesn’t really go anywhere; like the sun behind a cloud, it can be temporarily hidden from view, but it is fully capable of being restored in an instant. 【句子结构】分号连接的两个并列句, 第一个并列句主谓结构, 很简单,第二个并列句中,like the sun behind a cloud是状语, but 连接两个并列分句,包括短语be hidden from 和be capable of. 涉及被动语态的翻译方法。 【参考译文】我们的心理健康并不是真的消失不见,就像云朵背 后的太阳,它也许暂时被遮挡,但是它也能够在瞬间重焕光芒。 48 Mental health allows us to view others with sympathy if they are having troubles, with kindness if they are in pain, and with unconditional love no matter who they are.

相关文档
最新文档