Quadrivalvular
[医]四裂爿的, 具四瓣的
🗣️ 情景例句
What is your cancellation policy?
我怎么退票？
To learn obeying is the fundamental art of governing.
学会顺从是管理的基本艺术。
No, I think it'll be all right for him to go to school.
不，我想他去上学没什么关系。