城市居民知道这对社会团结、安全、保障和生活质量意味着什么。
City dwellers know what this means in terms of social cohesion, safety, security, and the quality of life.
一个安全的城市具有更好机会让社会阶级不再对立。
A safer city has a better chance of becoming a less socially divided one.
但是，也有许多研究显示，许多城市目前正在致力于正义的活动中——比如，保护社会安全网。
But there are quite a lot of studies showing that many countries now are investing in the right activity-for example, protecting the social safety net.
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