Femitron
场发射电子微波管
🗣️ 情景例句
That's fine. I think I can wait till then.
好的，我想我可以等到那时候。
Destroy the lion while he is yet but a whelp.
杀狮应在幼小时。
However, there are undoubtedly some wrong ways,
然而，却毫无疑问地有几种错误的方法。