他忘记把课本放在什么地方了。

He forgot where he put his textbook.

youdao

啊，快从那罐子里出来吧，告诉我，你知道他们把我的影子放在什么地方了吗？

Oh, do come out of that jug, and tell me, do you know where they put my shadow?

youdao

不过我们为什么不把注意力放在什么能做而不是什么不能做上面呢？

But why don't we focus on what can happen rather than what can't?

youdao

The Earth seems to be a pretty good inertial system, because on the ground, you leave something, it stays there.

地球看上去是个不错的惯性系,因为什么东西放在地上,都会保持静止

耶鲁公开课 - 基础物理课程节选

I'm gonna drag this thing here, zoom in, and voila, what do I now see?

我把这个东西拖放在这里，放大，现在我能看到什么？

哈佛公开课 - 计算机科学课程节选

And, what happens if I put a gazillion of these things together?

然后，如果我把,许许多多这种东西放在一块会发生什么呢？

麻省理工公开课 - 固态化学导论课程节选