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1·In this model, we should find the hithermost emergency exit to simulate the population evacuation.

在这个模型中，我们应该找到最近的紧急出口，以模拟人口疏散。

2·In this model, we should find the hithermost emergency exit to simulate the population evacuation and keep the number of people at every period of time and the total time recorded at the same time.

然后以此来研究起火楼层、备用出口的位置和个数、人的反应时间一致性等因素对总的疏散时间的影响。