同义词： case
同义词： cocktail dress
以上来源于: WordNet
N-COUNT A sheath is a covering for the blade of a knife. (刀) 鞘
Tough sheaths push through the earth and do the backwork needed for the emergence.
坚韧的叶鞘拱出了土壤，需要对突出体作辅助工作。
This is largely composed of the fatty myelin sheaths around neurons and so reveals the brain's connections.
白质主要由神经元周围的脂肪髓鞘组成，揭示了大脑的连接。
Embarrassed officials are now appealing to people carrying such ID CARDS to keep them safely tucked away in metal sheaths.
尴尬的官员们呼吁，携带这种身份证的人要把他们塞在金属套里。
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