Ballvalves
(ballvalve 的复数) 球型人造瓣膜
🗣️ 情景例句
There's your sleeping bag.
这是你们的睡袋。
She wants me to come as often as possible.
她希望我尽可能常来。
She is poor but quite respectable.
她虽穷，人品却很端正。