day job
noun[C]
uk/ˈdeɪ ˌdʒɒb/us/ˈdeɪ ˌdʒɑːb/ajobthat you do toearnmoneyso that you can do somethingelsethat youpreferbut that does notpayyou muchmoney:
正职（收入的主要来源，以便维持个人的其它爱好）Manyactorshavedayjobstoo.许多演员都有演艺工作之外的日常工作。
Idiom
don't give up the day job!