Please make sure all mobile phones are switched off during the performance.
请确保演出时关上所有手机。
The firecrackers went off during the night.
夜里放了鞭炮。
The student began to nod off during math class.
那学生上数学课的时候开始打盹。
We couldn't help but doze off during his lecture.
他演讲时我们忍不住打瞌睡。
In lots of schools, if a student needs to bring a phone to school, his or her parents will have to write a statement and make sure that the phone is turned off during class.
在很多学校，如果学生需要带手机来学校，他或她的父母必须写一份声明，确保手机在课堂上是关闭的。
Grandmother often nods off during the afternoon.
祖母下午常常打瞌睡。
他在看电影时打起了瞌睡。
He dozed off during the sermon.
在做礼拜时，他打瞌睡。
我看电影时打起盹儿来了。
I always nod off during his lectures.
我总是在他演讲时睡着。
He used to nod off during the French class.
他以前总是在法语课上打瞌睡。
The storm just whipped the roof off during the night!
昨晚的暴风雨一下子把房顶掀掉了。
Do not turn the power off during the firmware writing operation.
固件写入过程中切勿关闭电源。
Twenty percent of workers doze off during night shift. People aren't machines.
百分之二十的工作者在夜班工作的时候都困，人又不是机器。
Passengers will still have to keep their phones switched off during take-off and landing.
飞机起飞和降落的时候乘客还是不能开机的。
When the effects of alcohol wear off during the night, you'll probably be wide awake again.
当酒精的作用在夜间逐渐消逝时，你就会再次完全的醒来了。
With biofuels, the problems are caused by particles given off during their growth and manufacture.
而对生物燃料来说，引发问题的是种植和生产过程中散发的微粒。
American patent applications tailed off during the recession, but only after doubling in the decade before.
美国的专利申请数量虽然在衰退期间有所下降，但是在之前十年已经翻了一番。
Most families save some fireworks from the Spring Festival and set them off during the Lantern Festival.
大多数家庭会在春节省下一些烟花在元宵节燃放。
Most frequently, minds drifted off during personal grooming like taking a shower, shaving, and putting on makeup.
最频繁发生的是，思想往往在个人修饰时如淋浴、刮胡子和化妆期间游移开。
Bulgaria is still furious about having its gas supplies cut off during the Russian-Ukrainian gas row in January 2009.
2009年1月俄罗斯与乌克兰的天然气之争导致保加利亚天然气供应中断，对此保加利亚还愤愤不平。
Is his mobile phone turned off during times you normally can reach him, or does he claim not to have had any cell service for hours at a time?
他的手机会不会在你常联系他的时候关机或者不在服务区？
Because blood pressure tends to fall off during sleep, it could be that people who slept longer had lower blood pressure over a 24-hour period.
因为在睡眠期间，血压会下降，因此那些睡眠时间较长的人在24小时内的平均血压较低。
Meanwhile, millions of Chinese factory workers who were laid off during the crisis were eventually hired back as global trade slowly normalized.
与此同时，随着国际贸易缓慢恢复，中国在危机期间失业的大量工厂工人最终又找到了工作。
Unlike most of those who sounded off during the affair, she has followed in detail the domestic Danish debate and interviewed many of the protagonists.
与在本事件中大叫大嚷的大多数人不同，她密切注意丹麦国内的争论，并采访了众多的主要参与者。
Unlike most of those who sounded off during the affair, she has followed in detail the domestic Danish debate and interviewed many of the protagonists.
与在本事件中大叫大嚷的大多数人不同，她密切注意丹麦国内的争论，并采访了众多的主要参与者。
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