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单词 sheath
释义  Related topics: Biologysheath /ʃiːθ/ noun (plural sheaths) [countable]  1  COVERa cover for the blade of a knife or sword 〔刀或剑的〕套，鞘 His sword was back in its sheath. 他的剑插回了剑鞘。 →5 see picture at 见图 knife12. British English old-fashionedSY a condom 避孕套，保险套3  HBa protective covering that fits closely around something 护套，护层 The wire is covered by an outer plastic sheath. 电线外面覆盖着一层塑料保护层。4  a simple close-fitting dress 紧身连衣裙 She was wearing a plain black sheath. 她穿一件朴素的黑色紧身连衣裙。Examples from the Corpussheath• The ceramics -- cables encased in a sheath of liquid nitrogen -- are being developed for power generation and other machinery applications.• Communications-grade fiber is measured two ways: fiber miles and sheath miles.• Here she wears number 72, a black silk crêpe hooded sheath dress and black satin shoes.• Gritting his teeth against the pain, he made a grab with his right hand and ripped the knife from its sheath.• Options include a knife sheath, or an additional pocket, a dimpled seat patch and a front convenience zip.• The immune system inexplicably begins attacking the protective sheaths surrounding nerves, damaging the nerves' ability to conduct impulses.• Rising hot water pulls with it a surrounding sheath of cold water, effectively insulating the base of the jet.• In essays on whisky-tasting, sheath knives, deer hunting, he has a kind of perfect pitch.Origin sheath Old English sceathsheath nounChinese  knife for the cover a of Corpus blade a
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更新时间：2026/8/27 10:08:26