Compulsory book
[经] 必需的帐簿
🧩 词语组成解析
book
[bʊk]
n. 书;卷;课本;账簿;
vt.& vi. 预订;
vt. 登记;（向旅馆、饭店、戏院等）预约;立案（控告某人）;订立演出契约;
adj. 书的;账簿上的;得之（或来自）书本的;按照（或依据）书本的;
🗣️ 情景例句
How come you look so tired?
你怎么看起来这么疲倦？
I used to wake up early and get up at 7 o'clock.
我过去常早醒来并且在7点钟起床。
The children are no longer young, and they know who Father Christmas really is.
孩子们不小了，他们知道真正的“圣诞老人”是谁。