They can do only so much to represent the full complexity of the global climate and hence may give only limited information about natural variability.
关于全球气候的复杂性他们也只能呈现这么多，因此得到关于自然变化性的信息是有限的。
For instance, global and regional climate change and natural variability can influence weather, he said.
例如，全球和区域气候变化和自然变异可以影响天气，他说。
Of course, solar activity is just one natural source of climate variability. Volcanic eruptions are another, spewing gas and dust into the atmosphere.
当然，太阳活动仅仅是气候变化的一个自然因素，火山喷发出气体和尘埃进入大气层也会带来这个结果。
We were trying to determine how much of this was due to natural variability and therefore imply what aspect is due to man-made climate change as well.
我们正试着确定这种情况多大程度上是由自然环境的变化造成的，从而得出哪些方面是由人为气候变化造成。
Climate change is all about long term trends, which are hard to detect in a weather record which has very large natural variability.
气候变化是长期的，我们不能用一种天气情况来判断说有大的气候自然变异。
Climate change is all about long term trends, which are hard to detect in a weather record which has very large natural variability.
气候变化是长期的，我们不能用一种天气情况来判断说有大的气候自然变异。
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