But this term I fall behind.

但这个学期我后退了。

youdao

How dare I fall behind me is empty.

我怎么敢倒下，我身后空无一人。

youdao

I don't want my students to fall behind the times.

我不希望我的学生落后于时代。

youdao

Right? Now, unfortunatly, I myself just do not fall behind that idea, and I'll tell you why.

不错，但是恐怕我自己,不同意这种观点，我来告诉你为什么。

普林斯顿公开课 - 人性课程节选

No doubt at some point I'll fall behind.

毫无疑问，某些方面我会落后。

耶鲁公开课 - 死亡课程节选

That's why I want to cut the growth of tuition in half over the next 10 years. (Applause.) That's why I want to recruit 100, 000 new math and science teachers so our country doesn't fall behind.

WHITEHOUSE: The White House