law of conservation of energy
释义
能量守恒定律：能量在一个封闭系统中不会被创造或者消失，只会从一种形式转化为另一种形式。
例句
1·You must master the law of conservation of energy .
你必须掌握能量守衡定律。
2·The law of conservation of energy also takes a simple form.
能量守恒定律也获得简单的形式。
3·There is also no violation of the law of conservation of energy .
这根本就不违反能量守恒定律。
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