Amniotic sac
[医] 羊膜囊, 羊膜
🧩 词语组成解析
a. 羊膜的\\n[医] 羊膜的
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
And how are you going to stop him?
那， 怎么去阻止他呢？
You have a younger brother, don't you?
你有个弟弟，是吗？
That's right. And the air today is nice and clean.
对。今天空气很清新。