Classificational
分类的
🗣️ 情景例句
you'll help me select some of the great places.
能帮我挑一些好地方。
Come in,please.
请进！
Many firms, for instance, have great difficulty in obtaining technical or scientific books from libraries
比如，很多公司向图书馆借阅科技书籍时感到很困难，