Countersign
n. 口令, 暗号, 副署\\nvt. 副署, 确认
✅ 同义词
🔴 反义词
📖 牛津释义
countersign
v[Tn]
sign (a document, etc already signed by another person 副署; 会签)
a cheque countersigned on the back 背书支票.
countersign n secret word which must be spoken to a guard, etc before one is allowed to pass; password 回令（回应警卫人员等的暗语以便通行）
give the countersign 应答回令.
🗣️ 情景例句
Did you look at them?
你看过了吗？
I'm being kept very busy with my required reading for Sosh this quarter.
本学期有许多必须为上社会学而读的东西，我太忙了。
My grammar is improving, but I find idioms and useful expressions hard to learn.
我的语法在进步，但我发现习语和有用表达很难学。