You may nod off while driving.
开车时你可能会打瞌睡。
Turn the tap off while you soap your hands or brush your teeth.
洗手或刷牙时把水龙头关掉。
Have you nodded off while driving?
你开车时打瞌睡了吗？
Alice dozed off while her teacher was talking.
老师正在讲课，爱丽丝打起瞌睡来了。
I used to doze off while driving, but I don't anymore.
我以前开车时常会打瞌睡，但是现在不会了。
The surface is skimmed off while the sludge is pumped away to a separate treatment facility.
浮面的将被撇去，淤泥被泵到另外一个处理装置。
Amazingly, it's always the meat that is shaken off while the vegetables lie safely in the ladle.
令人称奇的是，在从大勺中抖下去的总是肉，而蔬菜则完好的待在大勺里。
He estimates that as many as 250,000 people in the U.S. doze off while driving every day, mostly in the daytime.
他估计美国每天至少有250,000人在开车的时候打瞌睡，大多数是在白天。
He estimates that as many as 250,000 people in the U. S. doze off while driving every day, mostly in the daytime.
他估计美国每天至少有250,000人在开车的时候打瞌睡，大多数是在白天。
He estimates that as many as 250, 000 people in the U.S. doze off while driving every day, mostly in the daytime.
他估计美国每天至少有250,000人在开车的时候打瞌睡，大多数是在白天。
It might not be applied thoroughly or thickly enough, and it might be perspired away or washed off while swimming.
可能抹的不够彻底，也不够厚，还可能随着汗水流走，在游泳时被洗掉。
In the picture, we are amazed to find that the god of death is sitting maliciously on a bus whose driver dozed off while driving.
在这幅图中，我们惊奇地看到死神正坐在一辆行驶的车上，恶毒地看着车中正在打瞌睡的司机。
The role of the placenta in maintaining sedation is revealed when the umbilical cord is closed off while keeping the fetus adequately supplied with oxygen.
胎盘维持镇静的作用在当脐带封闭保持胎儿足够的摄取氧气时被揭示。
And in recent years the gains to the top have taken off while most people have stood still, or even fallen back, though the squeeze was partly mitigated by differing spending patterns.
近年来收入最高者的所得已经飞涨，而大部分人却停滞不前，甚至下降，虽然通过使消费模式差异化部分地缓解了这一困境。
But I didn't find anything difficult until I went to university and realised that the first assignment required hard work and couldn't be dashed off while I was eating, as I'd been used to.
但是直到上大学后，我才发现事物的难度，并且才意识到我的第一个任务就需要付出艰苦的努力，可不是像我原来那样，趁吃饭的功夫就可以匆匆解决的小儿科。
While jumping, Mary's glasses fell off and broke.
在跳起来的时候，玛丽的眼镜掉下来摔碎了。
I think you'd better lay off fatty foods for a while.
我认为你最好暂时别吃高脂食物。
I'll be taking off for two weeks tomorrow. I won't be seeing you guys for a little while.
我从明天起离开两个星期。我也许有一段时间不会看到你们了。
Phytoplankton live at the ocean surface, where they pull carbon dioxide into the ocean while giving off oxygen.
"浮游植物生活在海洋表面，在那里他们把二氧化碳释放到海里，同时放出氧气。
This was to knock off being pirates, for a while, and be Indians for a change.
这就是暂时停止当海盗，改行当印第安人。
Now researchers suspect that dreams are part of the mind's emotional thermostat, regulating moods while the brain is "off-line."
现在，研究人员怀疑，梦是大脑情绪恒温器的一部分，在大脑“离线”时调节心情。
In this rudimentary natural society men go out to hunt and fish and to fight off the tribe next door while women keep the fire going.
在这个原始的自然社会里，男人出去打猎、捕鱼、击退隔壁部落，而女人则继续生火。
My brother, of course, raced off to be with his friends, while I had plenty to do myself.
当然，我的弟弟跑到他的朋友们那里去了，而我自己也有很多事情要做。
It pays laid off workers up to half of their previous wages while they look for work.
失业的人们在找工作期间可以领取相当于原来一半工资的失业保险金。
Passengers must not talk to the driver while the bus is moving, because it will take his focus off the road.
当公共汽车在行驶时，乘客不能和司机说话，因为这会分散司机的注意力。
It pays laid-off workers up to half of their previous wages while they look for work.
失业的人们在找工作期间可以领取相当于原来一半工资的失业保险金。
It pays laid-off workers up to half of their previous wages while they look for work.
失业的人们在找工作期间可以领取相当于原来一半工资的失业保险金。
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