Valve amplifier
[计] 电子管放大器
🧩 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
Get busy with your famous apple pie.
快做你拿手的苹果派吧。
Talk back.
你还顶嘴！
There is a call for you.
有你的电话。