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。
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。
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。
China's CO2 emissions nearly doubled in the last 6 years, at a time of rising concern about climate change around the world.
在世界各国对气候变化担忧日增之际，中国的二氧化碳排放量6年来增加了近一倍。
The authors of the study stress that global warming is real, and that increases in atmospheric CO2, which has doubled from pre-industrial standards, will have multiple serious impacts.
研究人员强调全球气候变暖是事实，它是有大气中的二氧化碳含量增多引起的。自从工业化以后，二氧化碳含量加倍的增长，浙江造成多重严重的不良影响。
The authors of the study stress that global warming is real, and that increases in atmospheric CO2, which has doubled from pre-industrial standards, will have multiple serious impacts.
研究人员强调全球气候变暖是事实，它是有大气中的二氧化碳含量增多引起的。自从工业化以后，二氧化碳含量加倍的增长，浙江造成多重严重的不良影响。
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