táo tài
to wash out
elimination (by selection)
natural selection
to knock out (in a competition)
to die out
to phase out
tài jiù huàn xīn
out with the old and in with the new (idiom)
dí tài
to wash away
to eradicate
zhēn tài
to eliminate by examination
yōu shèng liè tài
survival of the fittest (idiom)
liè tài
elimination of the weakest
mái tai
(dialect) dirty
to mock sb