We must work hard at all our lessons.

我们必须努力学习各门功课。

youdao

We are all born ignorant, but one must work hard to remain stupid.

我们生来都是无知的，但我们必须努力保持愚昧。

youdao

We must work hard at all the lessons.

我们必须认真学习所有公课。

youdao

We must work hard on all subjects.

我们应该努力学习各门功课。

youdao

We must work hard on all subjects.

我们应该努力学习各门功课。

youdao