At A While的意思|示意

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。

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。

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。

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。

They may even do the same thing while crossing a road at a pedestrian crossing or elsewhere.

他们甚至可以在走过人行横道或在其他地方过马路时做同样的事情。

While Europeans were served at the counter, a long line of Africans queued at the window and were kept waiting.

当欧洲人在柜台上服务时，在窗口排起了长队的非洲人一直在等待。