较贫穷国家的很多居民居住在不合标准的房子里，没有可靠的饮用水、道路和基本服务。
Many residents in poorer countries live in substandard housing without access to reliable drinking water, roads and basic services.
较贫穷国家的很多居民居住在不合标准的房子里，没有可靠的饮用水、道路和基本服务。
Many residents in poorer countries live in substandard housing without access to reliable drinking water, roads and basic services.
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