sac
sac
英[sæk]美[sæk]
n.（动植物组织中的）囊，液囊；
abbr.缩写 = (US) Strategic Air Command 战略空*司令部。；
复数：sacs;
例句
water sac水囊
renal sac肾囊
juicy sac汁囊
Starch grains present in the embryo sac and placenta are utilized by the embryo.存在于胚囊和胎座中的淀粉粒为胚胎所利用.
The heart sounds are muffled when the pericardial sac is distended with fluid.当心包充满液体时心音减弱.
Others are born live , after struggling to break free from a membranous egg sac.其余的是冲破膜状蛋囊而出生的.
The chalazal megaspore of a linear tetrad develops into a polygonum type sac.四分体线行排列,合点端的大孢子发育为蓼型胚囊.
Megaspore tetrad is linear. The chalazal megaspore develops into an embryo sac of Polygonum type.大孢子四分体为线形, 合点端功能大孢子发育成为蓼型胚囊.
Black Lambskin Leather small hand bag pouch sac New!黑色羊皮皮革小手包零钱包国资委全新!
Results Bad technical skill, preoperative intraorbital inflammation and conjunctival sac crispation were disadvantages to prognosis.结果工艺质量较差的羟基磷灰石眼座, 术前眶内存在炎症及结膜囊挛缩均影响预后.
柯林斯高阶英汉双解学习词典释义
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.
例句
The lungs consist of millions of tiny air sacs.肺由数百万个小气囊组成。英汉词典释义
n.
(动植物组织中的)液囊
juicy sac汁囊renal sac肾囊water sac水囊英英词典释义
Noun
1. an enclosed space;
"the trapped miners found a pocket of air"2. a case or sheath especially a pollen sac or moss capsule
3. a structure resembling a bag in an animal
行业词典
医学： 囊：袋状器官或结构；
