WHO is calling for greater awareness of health risks caused by urban air pollution, implementation of effective policies and close monitoring of the situation in cities.
世卫组织呼吁，要提高对城市空气污染带来的健康风险认识，要实施有效政策并密切监测城市里的这一情况。
WHO is calling for greater awareness of health risks caused by urban air pollution, implementation of effective policies and close monitoring of the situation in cities.
世卫组织呼吁，要提高对城市空气污染带来的健康风险认识，要实施有效政策并密切监测城市里的这一情况。
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