SAC

英

美

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

• I accidentally ripped her dural sac.
  我不小心撕裂了她的硬脊膜囊。
• Surgical methods included direct searching method, curved needle method and lacrimal sac incision.
  手术方法分别采用直接寻找法，弯针法，泪囊切开法。
• The yolk sac and yolk stalk on one of them were well preserved.
  观察了三例人胚外形，其中一例还有保存良好的卵黄囊和卵黄蒂。
• 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。
• 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。
• This shaft have overcome the problems which a single air sac of a traditional one existence.
  这种轴克服了传统气胀轴单一气囊所存在的问题。
• On midsagittal images, AP dural sac diameter and the upper-endplate angles of L1 and S1 were measured.
  在正中矢状位图像上测量了L1和S1水平的硬脊膜囊的前后径和上终板角。
• 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。
• Some of the models contained an air sac.
  其中一些模型含有气囊。
• 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。