我们一定要努力学习功课。

We must work hard at our lessons.

youdao

我们一定要努力学习，以赶上时代的步伐。

We must study hard to keep up with The Times.

youdao

我们一定要努力学习，以赶上时代的步伐。

We must study hard to keep up with The Times.

youdao