在模型建立的过程中， 将流域划分为几个子流域， 先对每个子流域中的产流进行计算， 通过河道进行汇流。
The flow in each sub basin is calculated and then added together to get the runoff concentration of the main river.
同时，将流域水循环系统概化为自然水循环系统和人工水循环系统，分别用供水单元和用水单元模拟其结构构成要素。
At the meantime, it generalizes the water circulation into natural and human water circulation system using water supply and water consumption unit to simulate their structure factors.
例如，在亚马逊河流域，能否进入整个地区，将取决于当地船员和其他助手是否愿意进入实力相对强大的美洲印第安人群体居住的地区。
In the Aamazon, for example, access to entire regions would depend on the willingness of local crew members and other assistants to enter areas inhabited by relatively powerful Amerindian groups.
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