Ectosac
[医] 外膜, 外囊(卵)
🗣️ 情景例句
I haven't seen you for a long time.
很久没见了。
I was born in a little town not far from here.
我出生在离这儿不远的小城市里。
Camping sites, by contrast, are highly cosmopolitan.
而露营驻地则相反，是高度世界性的。