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
And if I think about it long enough, you never know ...
如果我一直考虑下去的话 ，说不定……
How do you spend your evenings?
夜生活你都是怎么过的？
We're going to help some farmers with their work.
我们打算去帮助一些农民干活。