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n (1) (一)步;步距 ((length of a)step) [C]：take two～s forward/back 向前/后走兩步;The house is only a few～s away from here. 那房子離這兒就幾步遠。There were perhaps ten～s between me and the bear.我和那熊之間大概有10步的距離。If you advance one～， I'll kill her.如果你再往前走一步，我就殺了她。 〖同〗step，stride;

(2)步速 (rate of speed at which a person，animal，or group walks or runs) [U，a～]：go at a fast/slow/even/leisurely～： 快走/慢走/勻速走/閑庭信步;increase/quicken/slow down one's～加快/加快/放慢步伐;〖同〗rate， speed;

(3)速(進)度(speed at which any activity proceeds) [U，a～]：He was not accustomed to the fast～of New York living. 他不適應紐約生活的快節(jié)奏。The work progressed at a slow～. 這項工作進展緩慢。The story lacks～. 這個故事情節(jié)發(fā)展太慢。The sales resumed at a brisk～. 銷售又活躍起來?！纪絩ate， speed;

Keep pace (with sb/sth) (跟……)齊步前進;(和……)并駕齊馳：Any country which fails to keep～with these developments will soon be in trouble. 跟不上這些發(fā)展的國家將很快陷入困境。The child ran along， trying to keep～with the adults. 那孩子一路小跑，盡力想跟上大人。

put sb/sth through his/its paces 測試某人(物)的本領(性能)：Many different problems put the new mayor through his～s in the first months of his term. 許多各種各樣的難題在新市長就任的頭幾個月檢驗了他的能力。

set the pace 定速度;樹榜樣：Her experiments set the～for future research. 她的實驗為未來的研究工作樹立了典范。

→pacemaker (pace-setter) n 定速度者;起搏器;

v (1)踱步，慢行 (walk slowly with regular steps) [I+prep，I+adv]：He～d up and down (the room)， waiting for news. 他(在屋里)踱來踱去，等待消息。The horse～d around the ring. 這匹馬沿圓形場地慢行。The hikers～d steadily on. 徒步旅行者們一步一步地向前走去。Some were reading， some were～ing to and fro. 有的在讀書，有的在來來回回地踱方步。〖同〗walk， stroll;

(2)來回踱步于…… (go over with steps) [T+n]：He～d the room/the hall angrily. 他氣呼呼地在屋/廳里走來走去。She～d the floor trying to decide what to do. 她在地板上踱來踱去，苦苦地想著打算怎么辦。

(3) 給……定步速(速度) (set the speed of a race) [T+n]：He～d the runners at 12 miles an hour. 他為跑步者規(guī)定12英里的時速。I～d myself in the race. 我在比賽中控制自己的步速。The teacher～s his teaching to his students' abilities. 教師根據(jù)學生的能力調(diào)整教學進度。

pace off/out (v adv) 步測(vt)： I'll～out the room to give us an idea of the size for a new carpet. 我要步測一下房間的大小，好知道配多大的新地毯。