An increasingly attractive theory holds that decreases in atmospheric carbon dioxide start the cooling trend that leads to glaciation.
一个越来越有吸引力的理论认为，大气中二氧化碳的减少引发降温趋势，这趋势导致冰川作用。
Although change in carbon dioxide content closely follows change in temperature during periods of deglaciation, it apparently lags behind temperature during periods of cooling.
虽然在冰川消退期间二氧化碳含量的变化与温度的变化密切相关，但它显然滞后于冷却期间的温度。
The correlation of carbon dioxide with temperature, of course, does not establish whether changes in atmospheric composition caused the warming and cooling trends or were caused by them.
当然，二氧化碳与温度的相关性并不能确定是大气成分的变化导致了气候变暖或变冷的趋势，还是它们本身造成的。
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