"off duty" in Chinese (Simplified)
下班非当班
Definition
不工作或暂时不负责本职工作的状态，常用于警察、消防员、医生等暂时不当班的人。
Usage Notes (Chinese (Simplified))
在正式和非正式场合常用，特别指警察、护士、消防员、军人等穿制服职业。'off duty' 不仅仅指不上班，更强调已经正式交班。反义为 'on duty'。通常用来说某人当前不需要以职业身份做事。
Examples
The police officer is off duty today.
这位警察今天**下班**了。
The nurse can't help, she's off duty.
护士不能帮忙，她现在**不当班**。
After 6 p.m., the doctor is off duty.
医生下午六点后就**下班**了。
Sorry, I'm off duty—you'll need to speak to someone else.
不好意思，我现在**下班**了，你得找别人帮忙。
You spotted a firefighter in the crowd, but he was off duty at the time.
你在人群中看到了一个消防员，但他当时是**下班**的。
She's friendly to everyone even when she's off duty.
她即使**下班**后也对每个人都很友好。