耳机

An operator wearing earphone was sitting in the telephone exchange.

戴耳机的接线员正坐在总机室里。

He constructed the first known treadmill desk along with his laptop and headset in hopes of incorporating more movement for deskbound jobs.

他制造的第一机以及笔记本和耳机，给那些在办公室工作的人带来了更的运动机会。

Hook the bottom of the earhook onto the lower hinge pin, then lift and pull the top of the earhook over the upper hinge pin.

将耳机挂钩底部在耳机下端的上，从下端起并将挂钩上端与耳机顶部紧。