With so many pressing urban challenges, they see wastewater reuse as an added burden with no direct or immediate value.
有着很多迫切的城市挑战，各国只把废水再利用看作是额外的负担，没有直接或立即价值。
As an added incentive, offer value-adds not available via non-direct booking methods.
在直销渠道中添加一些其它渠道所没有的附加价值来刺激消费者使用直销渠道。
But for big-ticket items, you usually require a direct sales force; for mid-range products, distributors or value-added resellers; and, for low-priced items, retail outlets or the Internet.
但是，对于高价物品来说，你需要一个直接的销售推动力；对于中档价位的产品，可采用特许经营商的方式；对于低价产品，可以通过折扣店或者网络销售。
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