Yolk sac
卵黄囊\\n[医] 卵黄囊
🧩 词语组成解析
yolk
[jok]
n. 蛋黄;卵黄;羊毛油脂;胚乳;
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
Try putting him across your lap on his stomach.
试试让他趴着睡在你大腿上。
A fool always rushes to the fore.
傻瓜总爱强出头。
Lucy ran home at once. Her mother saw her when she arrived.
露西马上跑回家。到家时母亲看见了她。