muster in

To enlist in military service

應征入伍

She mustered in at the age of 18.

她18歲時入伍

muster out

To leave or be discharged from military service

離開軍隊

He mustered out when the war ended.

戰(zhàn)爭結束時他退伍了

pass muster

be accepted as adequate or satisfactory

被認為合格，被認為可以通得過

this manifesto would not pass muster with the voters.

選民們對這個宣言不滿意。

muster someone in (或 out)

(US)enrol someone into (or discharge someone from) military service

(美)征召…入伍；令…退伍