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

• It shows one sheath around the vascular bundles.
  它显示出在维管束周围的鞘状构造。
• In this paper, sheath scaling for PIII into a spherical target is investigated using numerical methods.
  本文对球形靶的鞘层尺度进行了数值求解、讨论了注入参数对鞘层尺度的影响。
• A white fatty substance that forms a medullary sheath around the axis cylinder of some nerve fibers.
  一种白色油脂物质，形成一些神经纤维轴突外包裹的一层髓鞘。
• The results supported that rice resistance to sheath blight was a hereditable character and selection to resistance was effective.
  表明水稻对纹枯病的抗性是可遗传的性状，对抗性的选择有效。
• 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。
• She appears wearing a magenta silk sheath dress by Jason wu, who also designed her inaugural gown.
  在封面照上，米歇尔身穿一袭由设计师吴季刚为其设计的绛红色紧身丝质裙装。她在奥巴马就职典礼上所穿的礼服就出自吴季刚之手。
• Objective: to provide anatomic data for treatment of thoracic nerve root sheath diseases.
  目的：为临床胸神经根鞘性疾患的诊治提供解剖学基础。
• Objective: To study the morphological changes of tissue engineering synovialized tendon after transplanted within the flexor digital sheath.
  目的：观察用组织工程学方法形成的滑膜化肌腱鞘内移植后的形态变化。
• 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。
• Lead in sheath heater of Microwaves.
  微波炉发热器护套中的铅。