As the conservation program has progressed in the village and the water table has risen, this well has also been able to provide irrigation for crops during the dry season.
自从水资源保护项目在村里的开展和地下水位的提升，这口井在旱季也能为作物灌溉提供水源。
You might think of it as the collection of data structures that fully describes how far the execution of the program has progressed.
你可以把它想成是描述“程序的运行进行到哪里”的数据结构的集合。
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