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
It really doesn't matter at all.
真的没关系。
Who is the auther of this essay?
谁是这论文的作者？
Anthropologists wondered where the remote ancestors of the Polynesian peoples now living in the Pacific Islands came from.The sagas of these people explain that some of them came from Indonesia about 2,000 years ago.
其中一部分是约在2，000年前从印度尼西亚迁来的。