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SAC

abbr.  南方空军司令部(南非)(Southern Air Command)

复数:sacs 

TOEFL医学

Collins.1 / BNC.16085 / COCA.17836

牛津词典

    noun

    • (人、动植物体内的)囊,液囊,气囊
      a part inside the body of a person, an animal or a plant, that is shaped like a bag, has thin skin around it, and contains liquid or air

      柯林斯词典

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

      双语例句

      • Some of the models contained an air sac.
        其中一些模型含有气囊。
      • The nectar that a bee can bring back in its honey sac.
        蜜蜂能装入蜜囊带回去的花蜜。
      • I accidentally ripped her dural sac.
        我不小心撕裂了她的硬脊膜囊。
      • In the first method, one drop of this dilution is dropped into the conjunctival sac.
        第一种方法是将一滴这种稀释液滴入结膜囊。
      • Application of digital imaging technique in quantitative analysis of blood vessels in chick embryo yolk sac membranes
        数字图像分析技术在鸡胚卵黄囊膜血管形成模型中的应用
      • The chorion and amnion are foetal membranes that contribute to the placenta and the foetal sac respectively.
        绒毛膜和羊膜是分别形成胎盘和羊膜囊的胎膜组织。
      • Starch grains present in the embryo sac and placenta are utilized by the embryo.
        传染性腔上囊病原体存在于胚囊和胎座中的淀粉粒为胚胎所利用。
      • The experiment was conducted to study the nutrition absorption and utilization in yolk sac of fasting gosling.
        以扬州鹅初生雏鹅为试验对象,研究在绝食条件下雏鹅对卵黄囊营养吸收与利用的规律。
      • Pollen tube entered the embryo sac via one synergid and in it released two sperms.
        花粉管经由一个助细胞进入胚囊,并在助细胞中释放两个精子。
      • Three pregnant uterus can be open and add to simulated gestation sac;
        三个怀孕子宫都可以打开,放入模拟妊娠囊。