For example, no matter how much a dancer wishes to leap off the floor and then start turning, the law of conservation of angular momentum absolutely prevents such a movement.
例如，无论一个舞者多么想要跳离地板，然后开始旋转，角动量守恒定律绝对阻止这样的动作。
You see it on the general exams for physics, and it's simply a matter of conservation of mechanical energy.
你会在一般的，物理考试中见到，这只是一个，机械能的问题。
Conservation of matter and energy in the universe.
宇宙的物质和能量守恒。
The conservation-of-value principle says that it doesn't matter how you slice the financial pie with financial engineering, share repurchases, or acquisitions;
价值守恒原则表明，无论你如何通过金融工程、股份回购或收购业务来分割金融资产，都无关紧要；
I wonder whether everybody knows the meaning of these two words of "energy-conservation" and "low carbon"? I assume as a matter of course and know.
我想知道能否每团体都知道这两个词的意义的“节能”和“低碳”？我想为天经地义之事，知道。
Well, conservation isn't just the business of a few people. It's a matter that concerns all of us. It's a science whose principles are written in the oldest code in the world, the laws of nature.
其实环保不仅是小众关心的事，而是关乎每个人的切身问题，是亿万年来的大自然法则。
Based on the conservation laws of matter and energy, the dynamic equations governing a land surface system are derived;
根据物质守恒和能量守恒这个大自然的共同法则，建立了陆地表层系统的动力学方程组。
Based on the conservation laws of matter and energy, the dynamic equations governing a land surface system are derived;
根据物质守恒和能量守恒这个大自然的共同法则，建立了陆地表层系统的动力学方程组。
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