Valvulae venarum
[医] 静脉瓣
🧩 词语组成解析
[医] 瓣, 瓣膜
🗣️ 情景例句
He was a dull man and you had to explain things very slowly to him.
他脑筋迟钝，你必须慢慢地给他解释事情。
Whatever he does, don't say a word.
不管他做什么，你都不要讲话。
Is there anything I can do for you?
我能为你做点什么吗？