His only link to the rest of his crew is through a headset.

而他跟同僚之间的唯一联系,要通过耳麦.

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Out of the plastic stereo headsets you can hear a little hum of prerecorded music.

你可以听到从塑料耳麦里发出的预先录好的音乐的嗡嗡声.

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