1. All the bedding is made of simple, untreated cotton. 所有的床上用品都是由未经加工的普通棉布制成的。
2. Frequently untreated human waste harvested from lavatories is delivered to farms and spread as fertilizer. 从厕所中收集的未经处理的人类排泄物经常被送到农场并作为肥料播撒。
3. Pay Drechsel, an environmental scientist, argues that the social and economic benefits of using untreated human waste to grow food outweigh the health risks. 环境科学家佩·德雷塞尔认为，用未经处理的人类粪便来种植粮食，这种做法的社会和经济效益超过了健康风险。
4. This chemical pollution has two sources: the factories which dump polluted water directly into the river and the local community which dumps untreated human wastes into the river. 这种化学污染有两个来源：直接把污水倒进河里的工厂，和把未经处理的人类垃圾倒进河里的本地社区。
5. If untreated, the illness can become severe. 若不加以治疗，病情就可能会变得很严重。
