A closed book
看不懂的书,天书,专业书
🧩 词语组成解析
closed
[klozd]
adj. 关闭着的，封闭着的;密闭着的，保密的;<美>准备好了的，定了契约的;
v. “close”的过去式和过去分词;
clos=close关闭+ed已...的→关闭了的
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
you wouldn't need as much money.
不需要花多少钱。
Hope for the best, but prepare for the worst.
作最好的希望，作最坏的打算。
Realizing that this was no ordinary fish, the fisherman made every effort not to damage it in any way.
那位渔民意识到这根本不是一条普通的鱼，于是千方百计不让它受到丝毫伤害。