n. 书( book的名词复数 );卷;课本;账簿
v. 预订( book的第三人称单数 );登记;(向旅馆、饭店、戏院等)预约;立案(控告某人)
网络 图书; 专书; 读书
These books must be very old.
这些书一定年头很久了。
The pile of books toppled over.
那一摞书倒了。
His books are not well known.
他写的书不太有名。
My suitcase was full of books.
我的提箱装满了书。
They publish reference books.
他们出版参考书。