a “disposal-based liner
问题描述：
a “disposal-based liner
原句是The majority of present wastewater treatment systems are a “disposal-based liner system” and they should be transformed into cyclical treatments in order to conserve the water and nutrient resources.
答
处理系统.
原句意思：现在的大多数污水处理厂都是单纯的处理系统,为了保护水资源,它们需要转变成循环系统.
你应该明白.