Electron tube amplifier
[电] 电子管放大器
🧩 词语组成解析
electron
[i'lektrɔn]
n. 电子;
🗣️ 情景例句
That's a great idea, Grandpa!
这太好了， 爷爷。
I did exercise last week.
我上星期做练习。
Why does aperson standing in a bus or train tend to fall when a sudden start is made?
一个人站在公共汽车或火车上，当车突然开动时，他为什么会倾倒呢？