To understand this system, we built a computer model of roosting, based on simple, individual rules, and simulated thousands and thousands of days in the virtual bat colony.
要了解这个系统， 我们建立了一个栖息的计算机模型。 基于简单的、 个体的规则， 然后虚拟的蝙蝠群里模拟 成千上万的日子。