甚至生态系统，比如热带雨林，没有可变的降雨量，但由于定期下暴雨和减少树木，该地带有了变化的内在动力。
Even ecosystems, such as tropical rain forests, which don't have variable rainfall, also have patch dynamics due to periodic storms and tree falls.
RMC 过程的可变性允许您创建定制的交付过程，它仅包含针对现已存在的交付过程和性能模式的微分变化。
RMC process variability allows you to create custom delivery processes that contain differential changes only to the existing delivery processes and capability patterns.
这种预测当然有无数可变因素，但是该报告称，即使确切的时间会有所不同，但是排名的变化几乎是相同的。
Such forecasts are of course subject to countless variables, but the report argues that the change in rankings should occur in roughly the same order even if the exact dates differ.
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