sheath是什么意思？

sheath

英[ʃi:θ] 美[ʃiθ]

• n. 护套，鞘，叶鞘，紧身装；
• v. 包，盖；

复数：sheaths;

第三人称单数：sheaths;

过去式：sheathed;

过去分词：sheathed;

现在分词：sheathing;

例句

• a sheath for a sword 剑鞘
• Palisade tissue is rich in saliferous vacuoles, while vascular bundle sheath is obvious. 栅栏组织富含含盐液泡泡, 维管束鞘明显.
• Conclusion Saber sheath trachea is a sign of rather severe COPD. 结论剑鞘气管是较重的copd的标志.
• To draw from or as if from a sheath or scabbard. 拔出从剑鞘或枪套中或仿佛从剑鞘或枪套中拔出.
• This suit of clothing is more inexpensive than that sheath. 这套衣服比那套便宜.
• He drew his sword from its sheath. 他拔剑出鞘.
• the sheath around an electric cable 电线护皮
• Coleorhiza ( pl . coleorhizae ) The protective sheath surrounding the radicle in grasses. 胚根鞘:保护幼根的鞘状结构.
• Both root and root cap are covered by a sheath - like structure called the coleorhiza. 根和根冠被一鞘 状 结构,即胚根鞘所覆盖.
• Coleoptile A sheath like structure that protects the developing plumule in grasses. 用来保护发育的胚芽的鞘状的结构.

柯林斯高阶英汉双解学习词典释义

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

英汉词典释义

• n.
  (刀、剑或工具尖锐部分的)鞘、套
  a sheath for a sword 剑鞘

英英词典释义

• Noun
  1. a protective covering for a knife or sword
  2. an enveloping structure or covering enclosing an animal or plant organ or part
  3. a dress suitable for formal occasions

行业词典

• 公路科技： 套管；
  医学： 鞘：围绕包裹组织的管状结构；护套；
  土木工程： 套管；
  生物学： 鞘；
  电力： 护套；
  电工： 护套；又称 :护套(jacket )；
  铁道： 套管；护套；