a bottomless pit
成語所屬單字pit
a bottomless pit — 慣用語
1. a person, place, or situation that always needs more — money, food, energy, or a
1.慣用語
釋義
無底洞；填不滿的需求
a person, place, or situation that always needs more — money, food, energy, or attention — and never seems satisfied.
例句
Teenage boys are a bottomless pit at dinner — Sarah cooks twice as much as before.
The failing factory had become a bottomless pit for government money.