duty這個(gè)單詞是名詞，意思是“責(zé)任; 值班; 職責(zé); 任務(wù)”等。短語off duty的意思是“下班，不值勤”的意思。例句如：

What time do you go off duty?
你什么時(shí)候下班？

They clocked off duty and left at ten to three.
他們打卡下班，于2點(diǎn)50分離開。

Four officers were told to go off duty and rest at home
四名官員已經(jīng)被通知停職在家休整。

She is off duty now.
她已經(jīng)下班了。

Come and visit us when you're off duty.
下班后請來看我們。

Only the nurse is on duty, all the others are off duty today.
今天只有一個(gè)護(hù)士值班，其他人都不值班。