单词	unnavigable
释义	unnavigable adjective un·​navigable "+ : not navigable up rapid-broken, unnavigable streams World's Work Word History First Known Use 1578, in the meaning defined above
随便看	Diogenean Diogenes Diogenes crab diogenic diogenite dioicous diol diolefin diolefins diols diomate Diomede Islands Diomedea Diomedeidae diomedeidaes Diomedes dionaeae dionaeas Dione dionin dionine dionise dionysi Dionysia Dionysiac

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