In a British study, sales teams used one of three headsets - left, right, both ears - for a day's selling of insurance by telephone. Those who wore the headset on their left ear outsold the others.

在英国开展的一项调查中，电话销售保险的小组使用了三种耳机——左耳机，右耳机，双耳机——一天下来，使用左耳机的销售人员业绩最好。

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The graphical sub-elements can include a telephone, mobile phone, instant message, camera, video camera, microphone, text-message, document, headset, or email icon.

图形子元素可以包括电话、手机、即时消息、照相机、摄像机、麦克风、文本消息、文档、耳机或者电子邮件图标。

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Use a headset when on the telephone, especially if answering or using the phone is a main part of your job.

使用耳机打电话，特别是应答电话或者使用电话是工作的主要内容时；

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Plantronics (number 43), a telephone headset maker, had its eye on Clearvox, which produces cellular headsets.

FORBES: The Race To Embrace

The device looks a bit like a massively overgrown telephone headset, with overtones of a cycle helmet and maybe a gas mask thrown in.

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Plantronics, in Santa Cruz, California (No. 43), a telephone headset maker, had its eye on Clearvox, which produces cellular headsets, but it wanted to make sure that its target shared its obsession with customer service.

FORBES: The Race To Embrace