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

1.
别放弃你的本职工作, 还是干老本行吧
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!
你唱歌太难听了,别放弃你的本职工作!
•
He tried to fix the car, but it was clear he should not give up the day job.
他试图修理汽车,但很明显他不应该放弃他的本职工作。