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

• 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。
• 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。
• ObjectiveTo study the clinical effectiveness of a modified laparoscopic high ligation in treatment of inguinal hernial sac in infants.
  目的探讨改良的腹腔镜下疝囊高位结扎术治疗小儿腹股沟斜疝的效果。
• 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 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 lungs consist of millions of tiny air sacs.
  肺由数百万个小气囊组成。
• I accidentally ripped her dural sac.
  我不小心撕裂了她的硬脊膜囊。
• These abnormalities would cause the abnormal structure of mature embryo sac.
  这些异常可能最终导致多种结构异常成熟胚囊的形成。
• Embryo sac and embryo development and embryo rescue in Lilium distant cross
  百合远缘杂交的胚囊和胚胎发育及胚拯救
• The sac is very strong, like a balloon filled with water.
  这个囊很结实，就像是装了水的气球。