1. The satellite fell into bottomless space.
    卫星落入深不可测的太空。

1. 下空裝：三角褲 briefs; panties | 下空裝 bottomless | 上空裝 topless

2. 下身脱光：上身脱光 Topless | 下身脱光 Bottomless | 献殷勤 Gallant

3. 很深的：bootless 无用的 | bottomless 很深的 | boundless 无限的

1. 无限的；无穷尽的
    If you describe a supply of something as bottomless, you mean that it seems so large that it will never run out.

    e.g. 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。

2. 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.

    e.g. His eyes were like bottomless brown pools.
           他的双眼深不见底，犹如两湾棕色的深潭。

3. 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.

    e.g. 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。
    e.g. 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。

1. unclothed especially below the waist or featuring such nudeness

    e.g. bottomless dancers
           a bottomless bar

2. extremely deep

    e.g. a bottomless pit
           a bottomless lake

3. having no apparent limits or bounds

    e.g. a bottomless supply of money
           bottomless pockets

4. having no bottom

    e.g. bottomless pajamas consisting simply of a long top opening down the front