The correlation of carbon dioxide with temperature, of course, does not establish whether changes in atmospheric composition caused the warming and cooling trends or 〔changes (in atmospheric composition)〕were caused by their〔〕.(4+) 当然二氧化碳与大气温度之间的相互联系并不能确定到底是大气成分的变化引起了气候的变暖和变冷的趋势,还是大气成分的变化是由气候的冷暖变化造成的。
The correlation of carbon dioxide with temperature, of course, does not establish whether changes in atmospheric composition caused the warming and cooling trends or 〔changes (in atmospheric composition)〕were caused by their〔〕.(4+)