Classman
n. …年级学生（用于复合词）
🗣️ 情景例句
I have to return this book to the library.
我得把书还回图书馆了。
He's an engineer.
他是工程师。
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，