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Headphones have improved a lot in terms of comfort and sound quality over the past century, but the basic concept hasn't changed. Attach them to an audio source, put them on or in your ears, and you'll hear sound via your eardrums.
上個世紀，耳機在舒適度和音質方面大有改善，但基本概念沒有變。將耳機的一端與音頻源連接，另一端放在或塞進耳朵，然后你就能通過耳鼓聽到音樂聲了。
But a new technology turns that old approach on its, well, head.
然而一項新的技術卻顛覆了這種觀點。
About a decade ago, VoxLinc designed a headphone for the military and law enforcement that conveyed sound to the listener through the cheekbones. Such bone-conducted audio reaches the cochlea directly, completely bypassing the eardrum. As a result there's no need to place anything on the ear that would block ambient noise.
大約十年前，VoxLinc 專門為軍隊和執法機構設計了一款通過顴骨傳送聲音的耳機。這種通過骨傳導的聲音完全繞過耳鼓，直接傳入耳蝸。因此就沒有必要在耳朵上帶任何東西了。
Now VoxLinc is using the same bone-conduction technology in its AfterShokz headphones. AfterShokz even works for some hearing-impaired listeners, as long as the cochlea or the nerves around it are intact.
如今，VoxLinc 利用這項骨傳導技術新開發了一款耳機 AfterShokz。對于某些患有聽覺障礙的人來說，只要耳蝸或者耳蝸四周的神經完好無損就能使用這種AfterShokz 耳機。
The phones wrap around the back of the head and rest just in front of the ears. They’re being marketed to bicyclists, who could then listen to tunes and still have their ears open to hear traffic. Although some might say that such potentially distracted cyclists have a lot of cheek.
戴這種耳機時，需將它環繞在后腦勺，靠在耳朵前方。這款耳機將會賣給自行車手，這樣在騎車時他們就能邊聽音樂邊注意交通路況。不過也不乏有調侃的聲音：他們得長許多顴骨才行啊。
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