bottomless
/ˈbɒtəmlɪs/adjective
1- without a bottom无底的。
1.1
- very deep很深的：
the cold dark sea in whose bottomless depths monsters swam.
海底深处有巨型生物游动的冰冷黑暗的大海。
1.2
- figurative (of a supply of money or other resources) inexhaustible〈喻〉（钱或其他资源）取之不尽的：
I don't have a bottomless pit of money.
我没有花不完的钱。