总的讲，老板在时，他们会保持行为最好，但是如果你在倾听时变得焦虑，他们就会比原本的样子更加放松些。

They will still be on their best behavior - after all, the boss is in the room - but they will relax just a little bit more than they would if you were becoming agitated as you listened to them.

youdao

他们在黄昏时返回。

They returned at twilight.

《柯林斯英汉双解大词典》

我们在日出时起床。

We got up at sunrise.

《牛津词典》

If you're looking to have an opportunity for a personal reflective... I read this on a retreat last year.

如果你想进行一下自我反省。。。,我去年在度假时读了这本书。

普林斯顿公开课 - 人性课程节选

And you friend says, "Well, you know I was kind of a nerd in high school. No one really liked me."

你的朋友说“呃，你知道，我在高中时是个书呆子。没什么人喜欢跟我打交道。”

I used to 课堂 - SpeakingMax英语口语达人

It's one of the only compounds, there's only I think three, where the density actually goes down when it freezes.

它是我见过的，唯一一个，在降温时密度下降的化合物。

麻省理工公开课 - 固态化学导论课程节选