Valve tubes
[医] 真空整流管
🧩 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;
n. 管子, 导管；管状虫；伦敦地铁（tube的复数）
🗣️ 情景例句
You are always straying from the subject.
你说话总爱跑题。
It's been a long time.
好久不见了。
What is the minimum we would have to order.
那么我们至少得订多少呢。