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。
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。
The website even stopped working for a while because too many people visited it at the same time.
网站甚至停止工作了一段时间，因为太多的人在同一时间访问它。
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。
With two wheels and a little basket, he can carry things for you while you're at the shops.
他有两个轮子和一个小篮子，你去商店时他可以帮你提东西。
While earning my Ph.D. at MIT and then as a post-doctor doing space research, the issue started to bother me.
当我在麻省理工学院获得博士学位，然后作为博士后从事太空研究时，这个问题开始困扰我。
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。
"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。
If you are looking at your phone while walking, you might not see a car come or traffic lights turn red.
如果你边走边看手机，你可能看不到车辆开过来或交通灯变红。
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。
While you're at it, you could cut your grass with a pair of scissors and wash your car with an old toothbrush.
当您做到这一点后，您可以用剪刀剪草，用旧牙刷洗车。
He remained standing a while, and at length inquired if he too could not be a doctor.
他站了一会儿，最后问他自己是不是也能当医生。
After a while somebody stirred inside, and with a bewildered face Miss Rottenmeier appeared, staring at the unexpected visitor.
过了一会儿，里面有人动了一下，罗特麦耶小姐出现了，她一脸困惑，瞪着这个不速之客。
While waiting at a traffic light, they saw a black Mercedes coupe on one side and a homeless man begging for food on the other.
在红绿灯旁等候的时候，他们看见一辆黑色奔驰轿车在一边，一个无家可归的人在另一边乞讨食物。
When he had looked at her a while, he said: "So you have come home again, Heidi?"
他看了她一会儿，说：“海蒂，你又回来了？”
Hans stood looking on for a while, and at last said, "You must be well off, master grinder!"
汉斯站在一旁看了一会儿，最后说道：“您一定很富裕了，磨工师傅！”
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