Radio radiation
射电辐射，无线电辐射
🧩 词语组成解析
🗣️ 情景例句
I lived in Florida,
我住在 Florida，
Who are you?
你是谁？
Precautions of this sort are necessary, for it is impossible to foretell the exact nature of the difficulties which will confront the pot-holer.
作出这样的准备是必要的，因为无法预见到洞穴探险者究竟会遇到什么性质的困难。