sheaths

英 [ʃiːðz]

美 [ʃiθs]

n.  (刀、剑等的)鞘; (工具的)套; 护套; 护层; 护皮; 紧身连衣裙
sheath的第三人称单数和复数

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.

双语例句

• The lodging resistance and chemical component contents in culm and leaf sheaths were analyzed by using japonica rice cultivars with different lodging resistance during grain filling.
  分析了不同抗倒类型的粳稻品种灌浆成熟过程中茎鞘抗倒伏性和化学成分含量的动态变化。
• The proportion of N was significantly higher in the culms and sheaths, whereas significantly lower in the grains, under dry cultivation than under SC.
  旱种稻成熟期茎鞘中的N素分配显著高于对照，籽粒显著低于对照，品种间叶片有所不同。
• Plants with a mild phenotype formed normal leaf sheaths and blades, but lacked ligules and showed diffusion of the blade – sheath boundary.
  轻度的植株能有正常的叶及叶鞘，但没有叶舌，叶与叶鞘的边界弥散。
• Tough sheaths push through the earth and do the backwork needed for the emergence, but the buds which then emerge in clusters are silken and delicate.
  坚韧的叶鞘拱出了土壤，需要对突出体作辅助工作，但是随后出现在叶丛中的花蕾光润而娇嫩。
• The utility model relates to an ice and snow shovel for road surface, comprising shovels, shovel sheaths, springs and a connecting plate.
  本实用新型为一种路面冰雪铲除装置，包括换锹、锹套、弹簧、连接板。
• Tall grass with smooth bluish leaf sheaths grown for hay in the United States.
  高草，叶鞘光滑带蓝色，在美国用作干草。
• Microscopic analysis revealed a benign neurogenic tumor arising from the connective tissue of the peripheral nerve sheaths of the trachea.
  病理分析报告为一源自周边神经鞘间结啼组织的良性神经性肿瘤。
• Specifically, the insulating myelin sheaths around the axons of neurons the parts responsible for transmitting information to other neurons get smaller.
  具体来说，神经元轴突周围的绝缘性髓鞘――负责将信息传送至其他神经元的部分――变小了。
• Even the knives seemed loosened in their sheaths, impatient for the bloody and merciless work to begin.
  甚至他们好象迫不及待地连匕首都出鞘了，单等这件血腥而残酷的行动开始了。
• Some cultural practices are required to keep these leaf sheaths active during ripening stage.
  一些栽培技术要求在成熟期尽量保持叶鞘的活性。