a bottomless pit (of something)
成語所屬單字pit
a bottomless pit (of something) — 慣用語
1. It refers to something that seems to have no limit or end.
1.慣用語
釋義
無底洞
It refers to something that seems to have no limit or end.
例句
The project became a bottomless pit of money.
Her grief was a bottomless pit of sorrow.