Both these devices worked well in sunny climates; but in northern Europe, the sun may be hidden by clouds for weeks at a time, while temperatures vary not only seasonally but from day to night.
这两种装置在阳光充足的气候条件下工作良好；但在北欧，太阳可能一次被云层遮挡数周，而温度不仅随着季节变化，而且还随着昼夜变化。
A still picture could only imply the existence of time, while time in a novel passed at the whim of the reader.
"一张静止的照片只是暗示了时间的存在，而小说中的时间则随着读者的幻想而流逝。
It always takes the class a while to settle down at the start of the lesson.
那个班一上课总得过一会儿才能安静下来。
Perhaps while you wait you would like a drink at the bar.
也许你等的时候会想要去酒吧喝一杯。
He caught a chill while performing at a rain-soaked open-air venue.
他在一个被雨浸湿的露天场地表演时着了风寒。
The windows didn't fit at the bottom so for a while we froze even in the middle of summer.
那些窗子的底部关不严，所以有段时间我们甚至在仲夏时节也感到极冷。
While this is very important material I think it's probably pitched at too high a level for our students.
尽管这是个很重要的材料，但我认为它的难度太大，不适合我们的学生。
Isn't that like trying to maintain a smile at your wedding reception while some relative gives a toast that amounts to "marriage is hard work”?
这是不是就像你在你的婚宴上试图保持微笑，而一些亲戚给你敬酒，相当于告诉你“婚姻是件苦差事”？
Nearly three-quarters of the first group guessed that Mr.Williams worked at a managerial level, while only 38.5 percent of the second group thought so.
第一组中有近四分之三的人认为威廉姆斯先生从事管理层工作，而第二组中仅有38.5%的人这样认为。
Nearly three-quarters of the first group guessed that Mr. Williams worked at a managerial level, while only 38.5 percent of the second group thought so.
第一组中有近四分之三的人认为威廉姆斯先生从事管理层工作，而第二组中仅有38.5%的人是这样认为的。
While I'm doing a stunt, there are no nerves at that point.
当我在做特技时，在那一点上没有紧张。
One evening, while discussing these risks at a local pub, we came up with a solution to our problems.
一天晚上，当我们在当地一个酒吧讨论这些冒险时，我们想到了解决我们问题的办法。
Researchers measured people's cortisol, which is a stress marker, while they were at work and while they were at home and found it higher at what is supposed to be a place of refuge.
研究人员测量了人们在工作时和在家里时的皮质醇，即一种压力标志的水平，结果发现在家里，这个原本应该是安身之所的地方，皮质醇含量更高。
We'd better continue to sleep at Toad Hall for a while longer.
我们最好还是在蛤蟆府多睡一会儿。
"There is a lot of support at Yale, to an extent, after a while, there is too much support," he said, half-joking about the countless resources available at the school.
他对学校里无尽的可利用资源半开玩笑道：“在某种程度上，耶鲁大学提供的支持很多；但过了一段时间，支持就太多了。”
I taught math, English and physics at Chamasiri Secondary School while I was a teacher in Kenya.
我在肯尼亚做老师的时候在查马西里中学教数学、英语和物理。
That morning while at work, Piechowski had unscrewed a bolt keeping the doors locked, so they could climb in.
那天早晨干活的时候，佩特罗夫斯基拧掉了一个锁门的螺栓，因此他们可以爬进去。
The man and his wife looked at each other for a while, and presently began to cry.
男人和他的妻子对视了一会儿，不一会儿就哭了起来。
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