Febetron
冷阴极脉冲, β射线管, 相对论性电子发生器
🗣️ 情景例句
Don't speak too soon.
话不要说得太早。
I'm practising tai chi chuan in the park.
我在公园打太极拳。
As soon as she saw it, the woman said she did not like it.
这位妇女对那件衣服只看一眼，就说不喜欢。