尽管在很长时间内，人类处于被动角色，但是随着时间延续，人与自然间关系也发生重大变动，逐步演变为人类对于自然的强烈影响与干预。
With the lapse of time, the relationship between human and nature changed greatly and the human altered its passive role and turned to the strong impact and interference on the nature.
长周期动力地形模型是模拟长时间尺度地形演变过程的一种过程模型，其代表性输入条件是模型输入的一个关键问题。
The long-term morphodynamic model is used to simulate morphologic evolution process in a long time scale, its key is to define the model representative input condition.
对我们太阳系内这颗巨大环状星球的观测将追踪风暴如何演变，以及它最终会持续多长时间。
Observers of our Solar System's huge ringed world will be tracking the storm to see how it evolves and how long it will ultimately last.
对我们太阳系内这颗巨大环状星球的观测将追踪风暴如何演变，以及它最终会持续多长时间。
Observers of our Solar System's huge ringed world will be tracking the storm to see how it evolves and how long it will ultimately last.
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