这样非常好，我就希望你们积极参加讨论关于学习问题。非常感谢，现在让我们参与。

This is very good, I hope you will actively participate in the discussion about the study. Thank you. Now let's take the attendance.

youdao

我写这封信是为了回答你关于如何学习英语的问题的。

I'm writing in reply to your question on how to learn English.

youdao

我们在学校里一直在学习关于环境和塑料问题的知识。

We have been learning about the environment at school and the problem of plastic.

youdao

We go back to the spring and we want to learn something about the spring.

我们回到弹簧的问题上来,我们要学习一些关于弹簧的知识

耶鲁公开课 - 基础物理课程节选