It says that spending is easier to measure, but the more complex impact of a society's attitude to education can make a big difference.

研究指出，用教育支出来衡量成果更容易，而社会对教育的态度产生的影响虽然较复杂，但意义很重大。

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The composite electric load model has complex impact on power system transient stability.

综合负荷模型对电力系统的暂态稳定性具有复杂的影响。

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It says that spending is easier to measure, but the more complex impact of a society's attitude to education can make a big difference.

BBC: UK education sixth in global ranking

Yet in many ways, retirement is a transition point that can have the most complex and widespread impact on our lives.

WSJ: The Experts: Retirement Surprises

Similarly, trying to contain the oil and limit the environmental impact is also complex, involving multiple technologies, the coordination of public agencies and private sector firms, and the mobilization of huge amounts of equipment and people.

FORBES: Let's Not Compound Complexity