What the experiment suggests is that the rise and fall of CO2 in the atmosphere is strongly influenced by natural changes in global temperature.

实验显示，大气中二氧化碳气体含量的增加与减少，受到全球气候自然变化的强烈影响。

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Global warming refers to an average increase in the Earth's temperature, which in turn causes changes in climate.

全球变暖指的是地球平均温度升高，从而导致气候变化。

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Global warming or seasonal temperature changes have happened in the past, so a lot of Norwegians are hoping that the melting of the Briksdalsbreen can be averted.

全球变暖以及季节性温度变化近来对冰川的影响都很大，很多挪威人都希望布里克·斯达尔·布林冰川融化的境况能够改善。

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Crop yields have increased at a constant rate despite changes in global temperature.

FORBES: Global Warming And Global Food Security

Natural processes involving changes in the Sun could have at least as powerful an effect on global temperature as increased emissions of carbon dioxide (CO2).

BBC: Viewpoint: The Sun and climate change