煤在出矿区几分钟以后，就可以将其能量以电能的方式运到要运的用户手中。
After coal is transported out from the mine area for several minutes, its energy can be transported to target users by the way of electric energy.
当电池释放电能或放电时，能量以相反的方向迁移，从阳极移至阴极。
When a battery powers a product, or discharges, energy travels the opposite way, between its anode and cathode.
科学家们发明了一种以塑料太阳能电池来把太阳光的能量转换成电能的方法，即使是在阴天的时候也可以做到。
Scientists have invented a plastic solar cell that can turn the sun's power into electrical energy, even on a cloudy day.
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