它们利用过往车辆的振动来发电。
They use vibrations from passing cars to produce electricity.
您所看到的这个领子就是通过利用振动来触发大脑中可以激活听觉的区域，从而将音乐带给佩戴它的聋人。
This collar is meant to give music to the deaf by using those vibrations to trigger the right area of the brain, allowing them to listen.
另外一群MIT的研究者们最近也开发了一种车用脉冲吸收器，它可以利用汽车运行过程中的上下振动来产生电能。
A group of students from MIT also recently announced the development of a shock absorber for vehicles that USES the up and down motion when driving to generate electricity.
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