有些人说阶梯式定价可用来保护用于饮用、做饭和洗濯的基本用水补贴。
Some people say step pricing can be used to protect a basic water allowance for drinking, cooking and washing.
它们涉及的领域从环境保护、全球变暖到水服务的公平定价以及灌溉、工业和家庭用水的公平分配。
They range from protection of the environment and global warming to fair pricing of water services and equitable distribution of water for irrigation, industry and household use.
电子传感器和控制器等技术可对电力进行可变定价，对用水消耗量进行精确计量。
Technology such as electronic sensors and controls would permit variable pricing for power and finely-tuned measures of water consumption.
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