研制组在流行病学调查研究的基础上，综合分析国内外资料，对标准中的健康危害指标及其判定值的制订依据进行了论证。
On the basis of epidemiological study and literature review, the scientific bas is for indicators of health effect and judgement value of those indicators in discriminant standard have been proved.
科学家们已经设定了一些主要环境指标的安全阈值，而一旦超出这些值，将会危害到地球物种的生存。
Scientists have set thresholds for key environmental processes that, if crossed, could threaten Earth's habitability.
除了身体形态作为一个指标，对健康的危害，有一个测量称为身体质量指数(BMI)表示，期待在比例身体，看看是否健康风险是可以预测的。
Besides body shape being an indicator of health risk, there is a measurement called the body Mass Index (BMI) that looks at the proportions of the body to see if health risks can be predicted.
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