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n(1)欄(橫)桿，扶手(horizontal bar supported at both ends)[C]：stairs/fence～s 樓梯扶手/柵欄橫桿;a curtain/towel～掛窗簾/毛巾的橫桿;the side～s of a ladder 梯子兩邊的扶手;lean on the ship's～倚在船欄桿上;

(2)鐵軌(道)(long bar of steel which forms the track on which trains run)[C，尤pl]：When the train went off the～s，some people were injured. 火車出軌時(shí)，有些人受傷了?！纪?railway，railroad;

(3)鐵路運(yùn)輸(method of travelling and transporting things in train)[U]：take～from ... to ... 乘火車從某地去某地;send sth by～由鐵路運(yùn)送某物;travel by～乘火車旅行;～travel/freight鐵路旅行/貨運(yùn);〖同〗 railway，railroad;

go off the rails 1)陷入混亂(BrE，infml)：Our routine work went completely off the～s for several days when he suddenly fell ill. 他突然生病，我們的日常工作有幾天陷入了混亂。2)不規(guī)矩，出格：He is a reliable man and has never gone off the～s. 他是個(gè)可靠的人，從來都是循規(guī)蹈矩。

→′railroad n 鐵路;′railway n 鐵路;′railhead n 鐵路的終(起)點(diǎn);建造中的鐵路已到達(dá)的最遠(yuǎn)點(diǎn);′railing n 扶手，欄桿;

vt 用欄桿隔開(fence with rails)[T+n+adv(in/off)]：～that area in 把那個(gè)地方圍起來;a～ed-in garden圍起來的花園;the pond that is～ed off用柵欄圍住的池塘;We'll～that ground off to stop people walking on it. 我們要把那塊地圍起來，避免人們踩踏。