- 肮脏: dirty; unclean
- 的: 4次方是 The fourth power of 2 i ...
- 门: entrance; exit; door; gate
- 垫: put sth. under sth. else to ...
- 肮脏的: dingy; dirty; dungy; feculent; filthy; foul; frowsty; frowsy; grimy; grubby; impure; messy; muddy; nasty; raunchy; scruffy; sordid; squalid
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