单词	cave-in
释义	cave-in noun ˈkāv-ˌin  1 : the action of caving in 2 : a place where earth has caved in Word History First Known Use 1860, in the meaning defined at sense 1
随便看	marsipobranch Marsipobranchia marsipobranchiata marsipobranchii marsipobranchs Marssonia Marssonina marster Marston Marston Moor marsupia marsupial marsupial anteater marsupial bone marsupial frog marsupial mole marsupial mouse marsupial rat marsupial wolf marsupialiae marsupialian marsupialias marsupials Marsupionta marsupium

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