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
Remember, it's only one night.
记住， 只不过一个晚上。
Yes. Please do.
好，请说。
In fact, I was a bit frightened and didn't know what we should do.
事实上我有点害怕，不知道我们该怎么办。