Recent studies of ancient Maya water management have found that the urban architecture of some cities was used to divert rainfall runoff into gravity-fed systems of interconnected reservoirs.
The Maya civilization is impressive for a number of reasons - a fully developed writing system, amazing architecture, and a complex political system. But life expectancy was low.
玛雅文明有几点让人印象深刻-达的书写系统，惊人的建筑成就和复杂的社会体系。但是生活指数不高。
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The Maya were noted as well for elaborate and highly decorated ceremonial architecture, including temple-pyramids, palaces and observatories, all built without metal tools.