At the city of Coba the Maya built dikes around a lake in order to raise its level and make their water supply more reliable.
在科巴市，玛雅人围绕着一个湖泊修建堤坝，以提高水位，使供水更加稳定可靠。
We also provide a high-level overview of the application built in this ongoing project.
我们还提供在手上的这个项目中构建的应用的高级概述。
The platform itself is built in layers of plug-ins, each one defining extensions to lower-level plug-ins, and so on.
平台本身是建立在插件层的，每一个插件层可以扩展出下一级插件层，下一级插件层又可以扩展出下下级插件层。
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