Criticizing Marxs thought of technology, North thinks that among momentum of system transition, population growth is the most ultimate one.

诺思批评马克思将技术而不是人口增长作为制度变迁的根本动力。

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By far, the biggest type of momentum that comes into play when it comes to changing our energy system is economic momentum.

到目前为止，改变我们能源系统的最大动力类型是经济动力。

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A fundamental law of physics holds that momentum is always conserved, meaning that unless some outside force enters a system, its total momentum must stay constant.

物理学一条基本定律认为动量守恒，也就是说，除非外力进入系统，否则总动量一定保持不变。

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U.S.President Barack Obama says the movement to reform the U.S.health insurance system is gaining momentum with the help of politicians who have crossed political lines to support it.

VOA: standard.2009.10.10

As a group, the aristocrats suffer from subpar operating momentum and rich valuations, averaging quadrix momentum scores (my proprietary rating system) of 47 and value scores of 49.

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Bill Ragsdale , editor of Good Fortune newsletter, likens his mutual fund momentum system to a horse race.

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Although the parties did not discuss BRI on Wednesday, that is an issue to be discussed once the system is taken care of, as commissioner David Stern feels that has led to increased momentum within the room.

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