n.护套；鞘；叶鞘；紧身装v.包，盖； 变形： 复数：sheaths过去式：sheathed过去分词：sheathed现在分词：sheathing第三人称单数：sheaths 英英释义： sheath[ ʃi:θ ]n.a protective covering for a knife or swordan enveloping structure or covering enclosing an animal or plant organ or part同义词：casea dress suitable