Postcaval
[医] 下腔静脉的
🗣️ 情景例句
He is an orphan, so he is not sure which family name he should have.
他是个孤儿，因而不知道他自己姓什么。
Many ants kill the horse.
蚁多可杀马。
Good morning, teacher.
老师早上好！