Chapter IV is about the social security issues for towns vulnerable groups, including the minimum life security, medical security, unemployment security, housing and educational security.

第四章分析了城镇弱势群体的有关社会保障问题，包括最低生活保障、医疗保障、失业保障、住房及教育保障。

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Note that this is a testing scenario; in real life, users would be well advised to keep security Settings at much higher than minimum.

注意，这是一个测试场景；现实生活中，最好建议用户保持安全设置远高于最低设置。

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Note that this is a testing scenario; in real life, users would be well advised to keep security Settings at much higher than minimum.

注意，这是一个测试场景；现实生活中，最好建议用户保持安全设置远高于最低设置。

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