Singh and his team designed a way for the gadgets to harvest indoor light, saving energy, money, and (in some cases) the need for replacing batteries.
辛格和其团队设计出一种使物件收集室内灯光的方式，不仅省电省钱，而且(在某些情况下)可以省去更换电池的麻烦。
Tired of Replacing Batteries Every Two Years?
厌倦了每隔两年就要更换电池？
Tired of Replacing Batteries Every Two Years?
厌倦了每隔两年就要更换电池？
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