同理，它们还稀释了“改善的下水道”的目标。 这一目标的本意是收集、处理和安全排放废水，而国际组织的方针是改善居民家中的厕所。
In the same way, they have diluted the goal of “improved sanitation” – the process of collecting, treating, and safely discharging wastewater – by applying it to indoor toilets in people’s homes.