单词	medullary sheath
释义	medullary sheath noun : myelin sheath Word History First Known Use circa 1846, in the meaning defined above Medical Definition medullary sheath noun : myelin sheath
随便看	grime grime's ditch Grime's ditch grime's dyke grimed grimeless grimes Grimes' Grave grimeses grimful grimgribber grimier grimiest grimily griminess griminesses griming grimlier grimliest grimly Grimm Grimm's law grimme grimmer grimmest

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