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
Why can't I design dresses for you here at home?
为什么我不能在家里为你设计服装呢？
To ride a bicycle
骑自行车
Children who play truant from school are unimaginative.
逃学的孩子们都缺乏想像力。