Chorion
n. 绒毛膜, 浆膜, 卵壳\\n[医] 绒[毛]膜
🗣️ 情景例句
I've been there several times.
我到那儿去过好几次。
Rear sons for help in old age; and store up grains against famine.
养儿防老。
Is it expensive to hire a car?
租车贵不贵？