为了评估志愿者成长环境的影响，研究者根据志愿者15岁之前在大城市，城镇或者农村生活时间的长短，为每个人制定了一个大城市指数。
To assess any effect of where the volunteers grew up, the researchers assigned each an "urbanicity" score based on how many years they'd spent by age 15 in a city, town or rural area.
为了使年轻一代健康成长，我们每个人都应该为构建一个健康的网络环境而做贡献。
In order to make the young generation grow up healthily, everyone of us should make contribution to form a healthy network environment.
每个人都希望成长在高质量的教育环境里，这种教育环境只有大城市才能提供。
Everyone wants to grow up in an environment with high quality of education which can only be offered in the big cities.
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