当我们进入现代社会，社会机制对人口的宏观影响，至少在某些方面可能会随着时间的推移，会越来越成为有效的因素。
The gradual increase in time delays for NH population declines as we moved into the modern era may reflect that at least some social mechanisms may becoming more effective over time at the macroscale.
然后，本文介绍人民币汇率衍生品其内在的避险机制，以及在规避微观和宏观风险方面的作用。
We analyze the road for the derivatives of exchange rate to avoid the risk in the micro areas and the macro areas.
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