Vacuum valve
[化] 真空阀
🧩 词语组成解析
valve
[vælv]
n. 阀;真空管;（管乐器的）活栓;（心脏的）瓣膜;
vt. 装阀于;以活门调节;
🗣️ 情景例句
And if you ever need Dad or me to help you ...
如果你们的确需要我和爸爸的帮助的话 ……
I hope you can accept my offer.
我希望你能接受我的建议。
He and his staff began throwing furniture out of the window.
他与店员动手向窗外投掷