[kǒu lìng]
（口頭命令） word of command; word; command; shibboleth
We await your command.
我們等待你的口令。
challenge and reply
口令問答
You must give the word before you can pass.
你必須說出口令才能通行。
He did not know the watchword.
他不知道口令。
We gave the watchword, and the sentinel let us pass.
我們說出口令， 哨兵就把我們放過去了。