The results indicated different species of plants may vary in their response to doubled CO2.

结果表明，CO_2浓度升高，对不同种类植物的作用不同。

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The results showed that the interaction of doubled CO2 concentrations with drought stress reduced the water consumption and transpiring rates of the saplings effectively.

结果表明，在各干旱胁迫水平下，CO2浓度倍增有效地降低了幼树的蒸腾耗水量和耗水速率。

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Their model predicted that if the amount of CO2 doubled, global temperature would rise roughly two degrees c.

通过他们的模型预测，如果二氧化碳浓度翻番，全球的气温可能上升大约2摄氏度。

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Finally, in a third set of simulations, they doubled the CO2 in the atmosphere, but added a layer of sulfate aerosols to the stratosphere, which would deflect about two per cent of incoming sunlight from the earth.

NEWYORKER: The Climate Fixers