sheath

英 [ʃiːθ]

美 [ʃiːθ]

n.  (刀、剑等的)鞘; (工具的)套; 护套; 护层; 护皮; 紧身连衣裙
v.  包; 盖

复数：sheaths　

TOEFLGRETEM8化学

Collins.1 / BNC.15335 / COCA.12614

牛津词典

noun

• （刀、剑等的）鞘；（工具的）套
  a cover that fits closely over the blade of a knife or other sharp weapon or tool
• 护套；护层；护皮
  any covering that fits closely over sth for protection
• 护套；护层；护皮
  any covering that fits closely over sth for protection
• 紧身连衣裙
  a woman's dress that fits the body closely

柯林斯词典

• (刀、剑的)鞘，套
  Asheathis a covering for the blade of a knife.
• 保险套;避孕套
  Asheathis a rubber covering for a man's penis and is used during sex as a contraceptive or as a protection against disease.

英英释义

noun

• a dress suitable for formal occasions
  Synonym:cocktail dress
• a protective covering (as for a knife or sword)
• an enveloping structure or covering enclosing an animal or plant organ or part
  Synonym:case

双语例句

• All the results demonstrated pyrenoid and starch sheath were closely related with photosynthetic function.
  这些结果均表明条浒苔蛋白核（淀粉鞘）单细胞绿藻的蛋白核相同，具有光合作用功能。
• In this paper, the establishment of the standard for the cables for wind power generation, design of the conductor construction and selection of the materials for insulation and sheath are presented.
  文中介绍了风能发电用电缆标准的制定、导体结构的设计，以及绝缘和护套材料的选择，最后还介绍了几项特殊性能试验方法及要求。
• The cells of leaf bundle sheath contain numerous chloroplasts and starch grains.
  叶的维管束鞘细胞含有许多叶绿体和淀粉粒，可以断定它是四碳植物。
• He found a wood-and-leather sheath that fit and slipped the dirk inside.
  他又找到了一个皮木做的合适刀鞘然后将匕首插了进去。
• Mainly applied in cracking resistant sheath of communication cable, control cable and power cable.
  主要用于通信电缆，控制电缆和电力电缆的护套层。
• Objective Research on domestic sheath autonomous formula and its application on SE-9000 automatic blood instrument.
  目的研究国产鞘液的自主配方及其在SE-9000全自动血液分析仪上的应用。
• Lead in sheath heater of Microwaves.
  微波炉发热器护套中的铅。
• He lowered it and drew his hunting-knife from its beaded sheath at his hip.
  他放下枪，从屁股后面的镶珠刀鞘里拔出猎刀。他一刀砍下去，砰的一声，把刀子都震飞了。
• It was shown in the populations that the apiculus coloration matched to basal leaf sheath coloration in each plant.
  在各个植株上，稃尖颜色和叶鞘颜色的表现完全相同。
• A protective sheath enclosing the shoot tip and embryonic leaves of grasses.
  胚芽鞘裹在草的芽尖和胚芽外层的保护鞘。