radio的复数形式是radios。radio作“收音机”解时，是可数名词，其前通常加冠词the或a。

radio：n.无线电广播；无线电广播节目；收音机 扩展资料

　He was given the chance to answer back in a radio interview.

　在一次广播访谈中他得到了辩白的机会。

　A truck driver used his CB radio to call for help.

　卡车司机用民用波段无线电呼救。

　The game will be broadcast simultaneously on TV and radio.

　比赛将同时在电视和广播中进行转播。