Chorionic sac
[医] 绒毛膜囊
🧩 词语组成解析
[医] 绒[毛]膜的
sac
[sæk]
n. （动植物组织中的）囊，液囊;
abbr. 缩写 = (US) Strategic Air Command 战略空军司令部。;
🗣️ 情景例句
Too easy for you?
对 ，太容易了
Does everyone have enough to drink?
诸位喝得尽兴了没有？
Why was that?
为什么呢？