单词	book lung
释义	book lung noun : a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book Word History First Known Use 1881, in the meaning defined above Medical Definition book lung noun ˈbu̇k-  : a saccular breathing organ in many arachnids containing thin folds of membrane arranged like the leaves of a book
随便看	returned returned shipment rate returned to returned to her old self returned to normal returnee returnees returner returners returnest returning returning board returning officer returning to returnless returns returns to retuse retweet retweeted retweeting retweets retwisted retwisting retwists

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