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ra.di.oH5reI7di7EJ, $-oJnpl radios a device for receiving, and sometimes broadcasting, sound messages that travel in the form of electromagnetic waves, or the receiving or sending of sound messages in this way收音机，无线电设备; 无线电传送，无线电广播a portable radio [C]便携式收音机Could you turn/switch the radio on/off, please. [C]请打开/关掉收音机。I heard a good programme on the radio last night. [U]昨晚我在收音机里听到了一档好节目。They were able to send a message back to shore over the ship's radio. [C]他们能够通过船上的无线电把信号送回岸上。We received the message by radio. [U]我们从无线电得到了这消息。The children had radio-controlled cars (= toy cars which move when they receive electromagnetic waves) as birthday presents.孩子们收到了遥控玩具汽车作生日礼物。Radio can be used to refer to the work of broadcasting sound programmes for the public to listen to.无线电台，无线电广播台She's got some kind of job in radio. [U]她在无线电广播台有份工作。Radio can also be used to refer to the sound programmes broadcast by electromagnetic waves.无线电广播节目I don't listen to radio much. [U]我不大听广播节目。Many local businesses advertise on local radio. [U]许多本地公司在当地电台做广告。Which radio station do you mostly listen to?你常听哪家广播台？We heard the news on a radio broadcast/programme.我们从电台广播/节目中听到了该新闻。A radio alarm (clock) (also clock radio) is a radio which can be switched on by a clock at a particular time, usually to wake someone up.钟控收音机A radio telescope is a device for receiving, for scientific study, the electromagnetic waves sent out by objects in space.射电望远镜
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