Embryonic sac
[医] 胚囊
🧩 词语组成解析
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
You would be well-advised to stay at home tonight.
你今晚还是呆在家里为妙。
To jump
跃起
Many people think that Canadians all over the country speak the same way.
许多人认为加拿大全国人的说法都相同。