croak/kroʊk/第三人称croaks现在进行时croaking过去式croaked过去完成时croaked1死, 咽气pass from physical life and lose all bodily attributes and functions necessary to sustain life同义词: pop offexitbuy the farmdeceasedrop deadcash in one's chipsgive-up the ghostchokedieexpiregopassconksnuff itperishpass awaykick the bucket反义词: be born2呱呱叫, 嘎嘎叫(of a frog or raven) to make a harsh noise同义词: cronk3嘟囔, 抱怨make complaining remarks or noises under one's breath同义词: muttergrumblegnarlmurmur