Energy cannot be created or destroyed, it can only be changed from one form to another.
能量不能被创造或毁灭，它只能从一种形式变成另一种形式。
-- Albert Einstein 爱因斯坦
Energy cannot be created or destroyed, it can only be changed from one form to another.
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Energy cannot be created or destroyed, it can only be changed from one form to another.
能量不能被创造或毁灭，它只能从一种形式变成另一种形式。
-- Albert Einstein 爱因斯坦
