眼动研究很有意思，就是因为有人盯着某东西并看不代表他们正在关注它。

Eye tracking studies are interesting, but just because someone is looking at something straight on doesn't mean they are paying attention to it.

youdao

现在已经看不见什么在动的东西了。

It can not see anything moving now.

youdao

现在已经看不见什么在动的东西了。

He can't see any moving things now.

youdao

What makes the law surprising is that if I only gave you half the law, namely every body will remain at rest if it's not acted upon by a force, you will say, "That's fine. I accept that, because here's something, you leave it there, it doesn't move.

这条定律妙就妙在,如果只看定律的前半段,即,如果物体不受外力作用,将保持静止状态,你肯定会觉得,"这没什么,我能理解,因为你把一个物体放在那里,自己肯定不会动

耶鲁公开课 - 基础物理课程节选