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n (1)速度(率)(relative rapidity in moving，going，etc;rate of motion or progress)[C，U]：the～of light/a chemical reaction 光速/化學(xué)反應(yīng)的速度 at high/top/full～以高/最高/全速;move at (a) slow/steady～以緩慢/穩(wěn)定的速度行進(jìn);drive at/keep to a～of more than 140 kilometres an hour 以每小時140多公里的速度驅(qū)車/保持每小時140公里的速度;reach～s in excess of 2000 kilometres an hour 達(dá)到一小時2000公里以上的高速度;～limit 車速限制;〖同〗rate;

(2)快捷，迅速(quickness of moving)[U]：move with great～非常迅速地移動;a runner with good～速度極快的賽跑者;moderate/reduce～勻/減速;need a lot more～需要更快速; More haste， less～. 欲速則不達(dá)?！?reading/-skating 快速閱讀/速度滑冰;〖同〗quickness，dash，rapidity;〖反〗slowness;

(3)感光度;快門速度(sensitivity of film or paper to light;time taken by a camera shutter to open and close)[C]：What is the～of the film? 這種膠片的感光速度是多少?the same shutter～s 相同的快門速度;take a photograph at a～of 1/100 0 of a second 用百分之一秒的快門速度拍一張照片;

(4)排擋，變速器(gear or set of gears，as in the transmission of a bicycle or motor vehicle)[C](尤構(gòu)成合成詞)：a 5-～bicycle/gearbox 五速的自行車/齒輪箱;

at speed 高(迅)速;The car was travelling at～. 汽車正高速行駛。

v(1)速行(進(jìn))(go or move quickly)[I+prep]：During holidays the hours usually～by.假期中時間通常過得很快?！玹o the hospital/down the street/past sb/through the countryside 飛速前往醫(yī)院/沿街急行/飛快地從某人身旁走過/急速穿過鄉(xiāng)村;〖同〗hurry，rush，hasten，run，race;〖反〗creep，crawl，drag;

(2)使速行(進(jìn))(cause to go or move quickly)[T+n，T+n+prep]：He sped her on her way/her climb. 他催她快上路/快爬。～sb to a waiting helicopter/the car through the streets 迅速把某人送進(jìn)等待的直升機/駕車迅速穿過一條條街道;～sb's recovery/the processing of the will 加速某人的康復(fù)/立遺囑的進(jìn)程;～production by providing better working conditions 以提供更好的工作條件來加快生產(chǎn);〖同〗hasten，promote，advance;〖反〗hinder，slow，block，bar;

(3)(違章)超速行使(drive very fast in a car，etc faster than is allowed by law)[I][通常用prog]：Don't～;there's lots of time. 別超速行駛，時間富余。He was arrested for～ing. 他由于超速駕車而被捕。The policeman said that I had been～ing in a thirty-mile-per-hour area. 警察說我一直在時速限制為30英里的地區(qū)超速行駛。

speed up (v adv)(使)加快速度(vt & vi)：The workers have been asked to～up production without an increase in pay. 一直要求工人們提高生產(chǎn)卻不給他們增加工資。The car～ed up to a hundred kilometers per hour. 那車提速到每小時100公里。

→′speeding n 超速行駛;spee′dometer n 計速表;′speedy adj 迅速的;即時的;′speedily adv 迅速地;′speediness n迅速;′speedboat n 快艇;′speed-indicator n 速度表;′speedway n 高速車道;賽車跑道;′speed-up n 加速;

【辨異】speed與hurry、quickness、rapidity、rush 和 velocity 的區(qū)別見 HURRY。