That's a mouthful, but it's what's happening on the microscale.

这是变化，但这是发生在微观度上事情。

And computational models that resolve all of these scales, from the microscale all the way up to the system level, are computationally intractable.

解决所有这些度（从微观度一直到系统级别）计算模型在计算上非常困难。