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Sac Air 英[Sæk 美[Sæk N.(动植物组织中的)囊,液囊;Abbr.缩写 Strategic Command 战略空军司令部

单词 sac
音标
英[sæk] 美[sæk]
解释
n.(动植物组织中的)囊,液囊;abbr.缩写 = (US) Strategic Air Command 战略空军司令部。;
例句

N-COUNT
(动物体内的)囊,液囊,气囊
A sac is a small part of an animal's body, shaped like a little bag. It contains air, liquid, or some other substance.
例:The lungs consist of millions of tiny air sacs.肺由数百万个小气囊组成。
变形
pl:sacs~

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