Environmental impact assessment of water resources project is a multi-index hierarchy complex, of which the key problem is how to quantify with reason the weights of each index of the system.

水资源工程环境影响评价是由众多指标组成层次结构的复杂系统，其关键问题是如何合理确定各评价指标的权重。

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"The Red Sea-Dead Sea project is an example of the extremes we're willing to consider when water resources are seriously constrained, " he added.

他补充道，红海死海水利工程是当水资源极度紧缺下的我们主动考虑的极端情况的一个案例。

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Opponents say the project threatens key water resources, increases U.S. ties to hydrocarbons, and supports the environmentally destructive oil sands.

FORBES: If U.S. Says No To Canadian Oil Sands Pipeline, China Will Say Yes