翻译：如果他要搜寻某类别的书,但不知哪一本适合,这时候这功能就可以发挥到作用

分类: 作业答案 • 2021-12-31 12:55:53

问题描述：

答

While he's searching for a certain kind of book,but has no idea which one is good for him,then this function will help him sort out.