Students should not worry about when exactly to use certain expressions.

学生不必担心什么时候使用某些特定的表达。

youdao

If you want to build a glossary from certain expressions and their translations, you can use the term base.

如果你想要建立一个包含特定表达与相应翻译的术语表，可以使用术语库。

youdao

They often don't want to cause offence and consequently, will start their sentences using certain expressions to soften the blow.

他们通常不想冒犯别人，所以开始会使用一些特定的表达来缓和接下来的内容。

youdao

You can become aware of and change ineffective body language habits, you can develop a deeper understanding of the impact that certain nonverbal behaviors have on your audiences, and you can add more effective gestures, postures, and expressions to your leadership repertoire.

FORBES: Body Language Will Make Or Break Future Leaders