Valva
[医] 瓣, 瓣膜
🗣️ 情景例句
In these modern times, almose anything is possible, nothing seems to be beyond the reach of science.
在这个现代社会里，几乎所有的事情都有可能会发生，似乎没有任何事情是科学解决不了的。
Which one do you want to buy?
你买哪一个？
I appreciate John's helping in time.
我感谢约翰的及时帮助。