求翻译：据世界卫生组织报告：目前全世界有10亿以上人口生活在污染严重的城市，而在洁净环境中生活的城市人口不到20％。全世界有近三分之一的人口缺少安全用水，每天有数以万计人的死与水污染有关，食品中毒事件经常发生。是什么意思？

According to the World Health Organization: Currently, there are less than 20% of the urban population of more than 1 billion people living in polluted cities, while living in a clean environment. Nearly a third of the population in the world lack access to safe water every day, tens of thousands of

According to World Health Organization (WHO) report: in the world are more than 1 billion people live in heavily polluted cities, while living in a clean environment of the city population of less than 20 per cent. Throughout the world, there are nearly 3 of the population lacks access to safe water

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According to the World Health Organization reports: currently has more than 1 billion people in the world live in seriously polluted cities, in a clean environment and urban population living in less than 20%. Nearly one-third people around the world lack safe water, where tens of thousands of peopl

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