另谋高就

• resign and land a better job

例句

1. 我想这事儿他干不长，他给人的印象是他干这事只是要看看是不是很合适，一有机会，他就会另谋高就。
   I don't think he'll stay long in this job-he gives the impression that he's just trying it for size, and he'll move to something better as soon as he gets the chance.