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

• 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。
• The peritoneal cavity is a closed sac.
  腹膜腔是一个封闭的囊腔。
• 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。
• Gallbladder: Muscular membranous sac under the liver that stores and concentrates Bile.
  胆囊：见于许多脊椎动物的肌性膜性囊，用以贮存及浓缩胆汁。
• 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。
• 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。
• ObjectiveTo study the effects of glycyrrhizin on intestinal absorption of paeoniflorin by the everted rat gut sac model.
  目的研究甘草酸对芍药苷大鼠肠吸收的影响。
• The lungs consist of millions of tiny air sacs.
  肺由数百万个小气囊组成。
• 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。
• 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。