Ballvalves
(ballvalve 的复数) 球型人造瓣膜
🗣️ 情景例句
I put them in my tuxedo--
我将它们放在我礼服的口袋，
A great ship asks deep water.
巨轮寻深水而航行。
It would represent quite a savings.
这省下的可是一笔不少的钱哩。