建造新路是一回事，而提供保障社会安全的复杂新系统却是另一件事。
And it is one thing to build a new road, but quite another to put in place complex new systems providing social security.
当国家政府再也无法提供个人安全、粮食保障以及教育和医疗等基本社会服务时，国家就会衰落。
States fail when national governments can no longer provide personal security, food security and basic social services such as education and health care.
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.
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