Work hard at your lessons.

努力学功课。

youdao

To begin with, you must work hard at your lessons and be fully prepared before the exam. Without sufficient preparation, you can hardly expect to answer all the questions correctly.

首先，你必须努力学习功课，并在考试前做好充分的准备。没有充分的准备，很难正确回答所有的问题。

youdao

It's wise for us to work hard at our lessons.

努力学习各门功课对我们来说是一明智之举。

youdao

Sir Hector said his award was a "testament to the hard work of everyone at the FSA during the crisis, their willingness to learn lessons and to bring about the changes that were necessary".

BBC: Sir Alan Budd and Hector Sants on New Year Honours list