Ectosac
[医] 外膜, 外囊(卵)
🗣️ 情景例句
He's on his way up.
他的事业蒸蒸日上。
The president must have the approval of Congress to declare war.
总统若要宣战，必须获得国会的承认。
What about wrestling and sailing?
摔跤和帆船怎么样？