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
I think so.
我想行了。
She was flattered at the invitation.
她受到邀请，不胜荣幸。
After a few minutes she started to cry again. Listen to me, I said.
几分钟后她又哭了起来。“听我的呀，”我说。