We extended this idea. We tested it many times over, and the next version we came up with was a box that kind of could trickle charge on solar energy, but most importantly connect to a car battery, because a car battery is a ubiquitous source of power in places where there's not enough electricity or erratic electricity.
我们延伸了这一想法，再次反复调试了很多次 之后的升级版 可以利用太阳能来充电 更重要的是，它可以连接到汽车电池 因为汽车电池是比较普及的能源形式 特别是当地这种电力不完善的地方 或者说供电不稳定