Valvulae venarum
[医] 静脉瓣
🧩 词语组成解析
[医] 瓣, 瓣膜
🗣️ 情景例句
No, thank you. It's too late. I really have to go.
不，谢谢。太晚了，我真的该走了。
Why are you sitting over there?
你为什么坐在那里？
We'll have to talk this over some more.
这件事我们得好好地再谈一谈。