Portable radio with extra batteries.

带备用电池的便携收音机。

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Portable radio in a straw hat, made by an American inventor.

这是一位美国发明家发明的便携式收音机，固定在一个草帽上。

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Then from the portable radio in the corner came the announcer’s voice.

从角落里的便携式收音机里传来了播音员的声音。

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My roommate and I were in our room, listening to it on my portable radio.

FORBES: Martin Luther King Day

Like Jobs, MacDonald was a master of many eras: His company introduced the first portable radio, the wireless remote control and became synonymous with consumer electronics innovation.

FORBES: Apple Watch

Rather, the radio and base stations automatically select and route each mobile or portable radio to the proper channel for that specific conversation, through the use of one or more control channels.

FORBES: Free Speech v. Denial Of Communications For Public Safety Agencies?