They need to learn how to use encyclopedias and other books in the reference area of the library.

他们需要学习如何使用百科全书及图书馆资料区里其它书籍。

youdao

They need to learn how to use encyclopedias and other books in the reference area of the library.

他们需要学习如何使用百科全书及图书馆资料区里其它书籍。

youdao