don't give up the day job!
US /doʊnt ɡɪv ʌp ðə deɪ dʒɑb!/
UK /doʊnt ɡɪv ʌp ðə deɪ dʒɑb!/

1.
別放棄你的本職工作, 還是幹老本行吧
used to tell someone that you do not think they are very good at something
:
•
Your singing is terrible, don't give up the day job!
你唱歌太難聽了,別放棄你的本職工作!
•
He tried to fix the car, but it was clear he should not give up the day job.
他試圖修理汽車,但很明顯他不應該放棄他的本職工作。