Ballvalves
(ballvalve 的复数) 球型人造瓣膜
🗣️ 情景例句
Yeah, and I have to finish this report by four.
是，我在四点之前得完成这个报告。
The blouse no longer fits me.
这件衬衣不再合我身了。
A week? As long as that?
一星期？要那么长时间？