Ball's valves
[医] 鲍尔氏瓣, 莫尔加尼氏瓣(肛瓣)
🧩 词语组成解析
n. 阀门；真空管；瓣膜（valve的复数）
🗣️ 情景例句
Maybe we should do it again.
也许我们该再来一次。
What's the capital of your country?
贵国首都是哪儿？
We shall need two buses to meet people at the staton.
我们需要两辆公共汽车到车站去接人。