noun
whack-a-mole
Refers to the arcade or carnival game where players hit toy moles with a mallet as they pop up from holes. Also used metaphorically for a situation where problems keep appearing and must be dealt with repeatedly.
ゲームセンターでもぐら叩きをした。
I played whack-a-mole at the arcade.
この仕事はまるでもぐら叩きだ
This job is just like whack-a-mole.