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	palmer oak palmer peninsula Palmerin palmers Palmerston Palmerston North palmerstonian seignior seigniorage seigniorages seignioralties seigniories seigniors seigniorships seigniory seignorage seignorages seignorial seignories seignory seihun seiled seiling seils seim

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