Short of not using a cellphone, the lowest exposure would come from using the speaker phone or a wired headset or ear buds.
2
当用户插上耳机和耳麦，他们是打算继续听当前的声音，只不过是转成私底下。
When users plug in a headset or headphones, they intend to continue listening to the current audio, but privately.
3
最后，如果他不需要和蓝牙耳麦“配对”或在开车时使用耳机的话，他还要把这该死的耗电装置禁用。
Finally, if he doesn't need to "pair" the phone with a Bluetooth-enabled loudspeaker-microphone or earpiece while driving, he'll turn the stupid battery-gobbling service off.
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