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
He always performs his tasks perfectly.
他总是圆满地完成工作。
He that goes a borrowing,goes a sorrowing.
向人借债是自寻烦恼。
but it is of a kind that, if he meets it, he can readily understand and deal with.
但如果有这种情况，露营者也容易理解，知道如何对付，