Passwording
n. (通过警戒线等时使用的)口令；通行字；保密字；获准进入的手段 [参较 countersign]
🗣️ 情景例句
You asked to see me.
你要求见我。
There are no birds of this year in last year's nests.
事过境迁。
Yes, we must.
是的，一定得请。