你如果想提高英语听说写的能力，那就得学习很多单词。

If you want to improve your ability to speak, listen and write in English, you have to learn lots of words.

youdao

想了解他，你就得学习他的语言。

To understand him, you've got to know his language.

youdao

如果我们想在中国赢得一个好地位，我们就得学习英语。

If we want to earn a good position in China, we need to learn English.

youdao

This being a Game Theory class, there's at least one game we have to discuss and we've come to it now.

既然这门课叫博弈论,我们就得学习一下接下来要讲的模型

耶鲁公开课 - 博弈论课程节选