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N-COUNT
钟;时钟
A clock is an instrument, for example in a room or on the outside of a building, that shows what time of day it is.
例句
He was conscious of a clock ticking...
他听到了钟的嘀嗒声。
He also repairs clocks and watches...
他也修钟表。
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N-COUNT
考勤钟;上下班计时钟
A time clock in a factory or office is a device that is used to record the hours that people work. Each worker puts a special card into the device when they arrive and leave, and the times are recorded on the card.
例句
Government workers were made to punch time clocks morning, noon and night.
公务员早、中、晚都要打卡。
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N-COUNT
(汽车的)车速表，里程表
In a car, the clock is the instrument that shows the speed of the car or the distance it has travelled.
例句
The car had 160,000 miles on the clock...
里程表显示此车已行驶了16万英里.
At 240 mph the needle went off the clock.
车速达到每小时240英里时,里程表上的指针显示超出了最高时速。
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VERB
达到(特定的时间或速度)
To clock a particular time or speed in a race means to reach that time or speed.
例句
Elliott clocked the fastest time this year for the 800 metres...
埃利奥特跑出了今年800米的最快速度
The yacht swayed in 40-knot winds, clocking speeds of 17 knots at times.
游艇在风速为40节的大风中摇摆前行，有时航速能达到17节。
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VERB
为…计时;为…测速
If something or someone is clocked at a particular time or speed, their time or speed is measured at that level.
例句
He has been clocked at 11 seconds for 100 metres...
他100米跑了11秒。
170-mile-an-hour winds were clocked on a mountaintop in North Carolina.
在北卡罗来纳州一处山顶测得的风速为每小时170英里。
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VERB
注意到;看到
If you clock something, you notice or see it.
例句
If there was any scandal in that company, you can be sure that Bobby will have clocked it.
那家公司有任何丑闻，博比肯定会知道。
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PHRASE
与时间赛跑;争分夺秒
If you are doing something against the clock, you are doing it in a great hurry, because there is very little time.
例句
The emergency services were working against the clock as the tide began to rise...
开始涨潮了，紧急救援机构正在争分夺秒地工作。
It's now become a race against the clock.
从现在开始要跟时间赛跑。
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PHRASE
提前完成任务
If you beat the clock, you finish doing something or succeed in doing something before the time allowed for doing it has ended.
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PHRASE
不分昼夜;日夜不停
If something is done round the clock or around the clock, it is done all day and all night without stopping.
例句
Rescue services have been working round the clock to free stranded motorists...
救援部门一直在日夜不停地工作，解救被困司机。
We can't afford to give you around-the-clock protection.
我们没有能力对你提供24小时的保护。
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PHRASE
倒退;回到以前
If you want to turn the clock back or put the clock back, you want to return to a situation that used to exist, usually because the present situation is unpleasant.
例句
In some ways we wish we could turn the clock back...
在某些方面，我们希望能回到以前。
We cannot put back the clock.
我们无法让时光倒流。
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PHRASE
(通常指因不耐烦而)不断看时间，老是看钟表
If you are watching the clock, you keep looking to see what time it is, usually because you are bored by something and want it to end as soon as possible.
例句
I started to watch the clock about halfway through the class.
课大约上了一半，我就开始不停地看时间。