Short of not using a cellphone, the lowest exposure would come from using the speaker phone or a wired headset or ear buds.

减少与手机接触的最有效方法是使用手机的扩音器、有线耳机或耳麦。

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In addition to visual tuning via meter, the GA-30 can play reference pitches from its internal speaker (Sound Out) for tuning by ear.

除了通过视觉调谐米的GA - 30可以发挥其内置扬声器(声音输出)，供参考球场耳调整。

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Of course, the second speaker does not mean he heard the news about John by putting his ear to a grapevine!

当然，第二个谈话者并不是说，他把耳朵贴在葡萄藤上才听到这个关于约翰的消息的！

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The throat mike removes extra microphone noises while the in-ear speaker bud provides clear, crisp audio.

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With The Fly, for example, users can draw a calculator and then touch the numbers to trigger a calculation heard through a speaker or ear phones.

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Now when he gets a call Prideaux can either hold the prosthetic arm up to his ear, put it on speaker phone, or take it out if need be.

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