英语翻译Bridge is a structure that spans obstacles,such as rivers and valleys,to provide a roadway for traffic.By far the majority of bridges are designed to carry automobile or railroad traffic,but some are intended for pedestrians only,A number

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英语翻译Bridgeisastructurethatspansobstacles,suchasriversandvalleys,toprovidearoadwayfortraffic.Byfarthe

英语翻译Bridge is a structure that spans obstacles,such as rivers and valleys,to provide a roadway for traffic.By far the majority of bridges are designed to carry automobile or railroad traffic,but some are intended for pedestrians only,A number
英语翻译
Bridge is a structure that spans obstacles,such as rivers and valleys,to provide a roadway for traffic.By far the majority of bridges are designed to carry automobile or railroad traffic,but some are intended for pedestrians only,A number of aqueduct bridges,mostly erected in Europe in the 19th century,carry canals and their barge traffic~and at least one bridge,at New York City's Kennedy Airport,serves to carry taxying aircraft over a highway.
The first bridges built by man probably resembled those still being constructed by primitive peoples in isolated regions.The tools and building skills of early man,like those of primitive peoples today,were so elementary that he was undoubtedly forced to use easily transportable materials that could be put in place with a minimum of forming and shaping.
In forest regions,where stout timbers or logs could be obtained,bridges very likely were made of one or more parallel logs,possibly covered with cross branches or matting for better footing.
In tropical regions of India,Africa,and South America,fibrous vines were used to build suspension bridges.The vines were tied to trees or rocks on each side of the stream or valley to be crossed.One or more vines were used to tread on.Other vines,strung several feet higher,were used for hand holds.Although vine bridges are usually unstable,some built by the Incas were strong and stable enough to be used by the invading Spanish soldiers and their horses.

英语翻译Bridge is a structure that spans obstacles,such as rivers and valleys,to provide a roadway for traffic.By far the majority of bridges are designed to carry automobile or railroad traffic,but some are intended for pedestrians only,A number
桥是一种结构,是跨越的障碍,如河流和峡谷,以提供一巷交通.到现在为止,大多数桥梁的设计进行的汽车或火车交通,但有些则拟作行人专用区,不少输水桥梁大多建于十九世纪的欧洲,进行运河和驳船的交通~至少一桥在纽约市的肯尼迪机场,可携带taxying飞机在一条公路上.第一桥梁男子大概类似于仍在建造的原始民族在孤立的地区.工具和建筑技术进步的早期人类,就像原始人民今天这么小,他无疑是被迫使用容易运输的材料,可以在同最少的形成.在森林地区,肥硕的木材或原木可以得到,桥梁,很可能是由一个或多个并行的原木,可能复盖着两岸分行或铺垫更好的基础.在热带地区,印度,非洲和南美洲,纤维vines用来建造悬索桥.汁被捆在树干或石块每溪边或山谷可以越过.一个或多个葡萄被用来踩.其他vines,strung几尺高,被用于手搁置.虽然藤蔓桥通常是不稳定的,一些内置的incas强大而稳定,能够被入侵的西班牙士兵和他们马匹.
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桥梁是跨过障碍, 譬如河和谷, 为交通提供车行道的结构。多数桥梁显然被设计运载汽车或铁路交通, 但一些意欲为步行者唯一, 一定数量的渡槽桥梁, 主要被架设在欧洲在19 世纪, 运载运河并且他们的驳船traffic~ 和至少一座桥梁, 在纽约City's 肯尼迪机场, 用于运载乘出租车的航空器在高速公路。第一桥梁被人类修筑大概类似了那些由原始人民仍然被修建在被隔绝的地区。早期人工具和大厦技能, 象那些原始人民今天, 是很基本的,他无容置疑地被迫使容易地使用能放在适当的位置以极小值形成和塑造的可移动的材料。在森林地区, 壮健木材或日志能被获得, 桥梁非常可能由一个或更多平行的日志做成, 用发怒分支或席子可能盖为更好的立足处。在印度、非洲, 和南美洲的热带地区, 纤维状藤被使用修筑吊桥。藤被栓了对树或岩石在各小河或谷的边横渡。一个或更多藤被使用践踏。其它藤, 被串起几只脚更高, 被使用了为手举行。虽然藤桥梁通常是不稳定的, 一些由印加人修造是强和槽枥足够由侵略的西班牙战士和他们的马使用。

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桥是一种结构,是跨越的障碍,如河流和峡谷,以提供一巷交通. 到现在为止,大多数桥梁的设计进行的汽车或火车交通, 但有些则拟作行人专用区,不少输水桥梁大多建于十九世纪的欧洲,进行运河和驳船的交通~至少一桥在纽约市的肯尼迪机场,可携带taxying飞机在一条公路上. 第一桥梁男子大概类似于仍在建造的原始民族在孤立的地区. 工具和建筑技术进步的早期人类,就像原始人民今天这么小,他无疑是被迫使用容易运输的材料,可以在同最少的形成. 在森林地区,肥硕的木材或原木可以得到, 桥梁,很可能是由一个或多个并行的原木, 可能复盖着两岸分行或铺垫更好的基础. 在热带地区,印度,非洲和南美洲,纤维vines用来建造悬索桥. 汁被捆在树干或石块每溪边或山谷可以越过. 一个或多个葡萄被用来踩. 其他vines,strung几尺高,被用于手搁置. 虽然藤蔓桥通常是不稳定的, 一些内置的incas强大而稳定,能够被入侵的西班牙士兵和他们马匹

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河上有一座桥的英语翻译是什么?是there is a bridge over the river 还是cross the river. 英语翻译大桥街是个能让人玩的开心的好地方.Bridge Street is a ______ ______to ______ ______. 英语翻译一翻译下列备忘录(英译中)MEMORANDUM to:all staff from:manager t.c.date:november 8th,2007subject:staff christmas partyit's that time of year again.as you all konw,christmas is our busiest seaon of the year.every year it is a stru there is a bridge （）the river there is a bridge o__ the rive 请问A twenty-meter-long bridge可不可以转换成A bridge is twenty meters long? bridge是什么意思English is a bridge ( ) A of many knowledges B of much knowledge This is a stone bridge.同义句The bridge ______ _______ _______ stone. 翻译下面一句话 The bridge is a twin-deck cable-stayed bridge crossing the H Channel. 英语翻译London Bridge is a bridge between the City of London and Southwark in London,England,over the River Thames.Situated between Cannon Street Railway Bridge and Tower Bridge,it forms the western end of the Pool of London.On the south side of 英语翻译Tokyo is famous for shopping and sightseeing.besides Tokyo Tower and Mount Fuji,Rainbow Bridge is another great place to visit.it is a supension bridge over the Tokyo Bay.Rainbow Bridge was completed in 1993 and soon became a new symbol o look!there is a small b__ under that bridge Bridge Street is a good place to have fun.中文翻译 There is a bridge over the river的意思 Is there a bridge over the river的中文 Is not to play the role of a bridge? There is a boat under the bridge 同义句 Bridge street is a good place to have fun