当一个人做低负荷运动，比如走路或是忙于工作（当然不是光坐在椅子上的脑力劳动），他基本上是通过燃烧脂肪来供能的。
When a person is doing low-level exercise, such as walking, or maybe performing various tasks at work (if work is not just sitting in a chair), he burns primarily fats for energy.
建筑北立面尽可能多的设置光伏电池板，为建筑供能。
Photovoltaic panels were added to as much of the north-facing side wall as possible, generating solar electricity for the building.
传统的水泵运行时通过柴油或者电推动，而太阳能水泵是通过光伏电池板捕捉和收集阳光的辐射热能为水泵供能。
These panels capture and collect the radiated thermal energy from sunlight. Traditionally, water pumps run on diesel or grid electricity.
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