图书馆里很安静，有很多书供我们参考，这些书对我们的学习有帮助。

It is very quiet in the library and there are a lot of books for our reference, which are very helpful to our study.

youdao

图书馆里很安静，有很多书供我们参考，这些书对我们的学习有帮助。

It is very quiet in the library and there are a lot of books for our reference, which are very helpful to our study.

youdao