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
by cutting all the cultural programs.
是透过取消所有的文化活动。
One party is entitled to cancel the contract if the other side cannot execute it.
如果一方不履行合同，另一方有权取消合同。
Settlers made agreements with Native American cheifs but always broke them afterwards.
殖民者同美洲土著人的首领达成了协议，但是这些协议随后总是被撕毁。