Students must observe discipline in class.

学生们在课堂上必须遵守纪律。

He learned how to observe discipline in the army.

他在军队里学会了如何遵守纪律。

It is important to observe discipline in the workplace.

在工作场所遵守纪律是很重要的。

If you want to succeed, you need to observe discipline.

如果你想成功，你需要遵守纪律。

Children need to learn to observe discipline from a young age.

孩子们需要从小就学会遵守纪律。