研究员依据六项指标对各国进行了评级：物质满足感；住房与环境；教育的完善程度；健康与安全；危险行为；学校生活的质量。
Researchers ranked countries on variables in six categories: material well-being; housing and environment; educational well-being; health and safety; risky behaviour; and quality of school life.
我们要严格控制和治理污染，加快重点地区和重点流域污染的治理，公布大城市环境质量监测指标。
We should strictly deal with and control pollution and speed up pollution treatment in major regions and river valley. We should publish standards for monitoring environmental quality in large cities.
我们要严格控制和治理污染，加快重点地区和重点流域污染的治理，公布大城市环境质量监测指标。
We should stricly deal with and control pollution and speed up pollution treatment in major regions and river valleys. We should publish standards for monitoring environmental quality in large cities.
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