以下为句子列表：
英文: In order to take precautions against the social risk of city, construct a harmonious society, early warning system should be established.
中文: 为了防範城市社会风险，构建和谐社会，需要建立预警机制。
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英文: In order to understand the risk factors, the authors reviewed the recent study advances, focusing on biologic, psychological and social risk factors of juvenile delinquency.
中文: 该文对青少年犯罪的生物、心理及社会若干影响因素进行总结，以期有助于青少年违法犯罪的预防和干预。
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