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
Thanks. I'll contact you.
谢谢，我会再跟你联络的。
Not yet.
还没有。
We waited and waited, but nothing happened.
我们等啊等啊，可情况没有变化。