至于虐待儿童的流行程度，目前尚无任何可靠的全球估计数。

There are no reliable global estimates for the prevalence of child maltreatment.

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但该报告的其中一个撰稿人说，水资源短缺、疾病流行和作物歉收等迫在眉睫的问题的令人震惊的统计数据的意义，在于促使政客们做好准备，应对即将来临的苦难。

But the point of the frightening statistics about impending water shortages, epidemics and crop failures, says one of the authors, is to jolt politicians into preparing for the coming afflictions.

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这些公司怎样保证基因分型结果的准确性？又怎样保证风险预测的结果建立在实实在在的遗传和流行病学统计数据上？

How do the companies ensure that their genotyping is accurate and their risk predictions are based on solid genetic and epidemiological statistics?

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