社会经济现象之间存在的错综复杂的联系，多数可以用指数体系来描述。
The complicated relations between social economic phenomena can mostly be described with index system.
通常被描述为Aw指数，即“有水”指数。
This is often described as Aw index, that is, "available water" index.
通常被描述为Aw指数，即“有水”指数。
This is often described as Aw index, that is, "available water" index.
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