If you describe a supply of something as bottomless, you mean that it seems so large that it will never run out.
例句
Princess Anne does not have a bottomless purse.安妮公主的钱并非多得取之不尽，用之不竭。
ADJ
深不见底的；深不可测的
If you describe something as bottomless, you mean that it is so deep that it seems to have no bottom.
例句
His eyes were like bottomless brown pools.他的双眼深不见底，犹如两湾棕色的深潭。
PHRASE
取之不竭的事物；宝藏；无底洞
If you describe something as a bottomless pit, you mean that it seems as if you can take things from it and it will never be empty or put things in it and it will never be full.
例句
A gold mine is not a bottomless pit, the gold runs out...金矿并非无底的宝藏，金子终究会被采光。The problem is we don't have a bottomless pit of resources...问题是我们没有取之不尽的资源。
英汉词典释义
adj.
无底的,深不可测的,极深的
a bottomless abyss无底的深渊A beggar’s purse is bottomless.乞丐的口袋没有底。
无限的
There isn’t a bottomless pit of money for public spending.并非有用之不尽的钱用于公共开支。
无尽的事物；无休止的状况；无底洞
the bottomless pit of his sorrow他无尽的悲哀There isn’t a bottomless pit of money for public spending.并非有用之不尽的钱用于公共开支。
英英词典释义
Adjective
1. extremely deep;
"a bottomless pit""a bottomless lake"
2. having no bottom;
"bottomless pajamas consisting simply of a long top opening down the front"
3. having no apparent limits or bounds;
"a bottomless supply of money""bottomless pockets"
4. unclothed especially below the waist or featuring such nudeness;