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- 碳水化合物给我们的身体提供热量和能量。
Carbohydrates provide our bodies with heat and energy.
- 谁发现了能量守恒?
Who discovered the conservation of energy?
- 太阳能电池能把阳光的能量转化为电能。
The solar cell can convert the energy of sunlight into electric energy.
- 太阳是能量的最基本来源。
The sun is the ultimate source of energy.
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