从上而下的方式容易些，不用担心模型的运动方面，你只要建立些方程式，重现秀丽隐杆线虫的行为就行了，这也是经济模型经常采用的方式。
Instead of worrying about how the thing being modelled works, you need only find some equations that reproduce its behaviour; economic models often work this way.
关于动力学方程式的求解结果可用于从理论上阐明草原上二级系统处于稳定状态下的局部动力学行为和可能出现的变化过程。
The computed result can be applied to the theoretical explanation of a partial dynamic action under the stable and the possible changing process.
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