不是所有血液中二氧化碳浓度高的人都会有这种经历，先前的研究发现人口学和心理学上的因素也起到了影响。

Not everyone with high CO2 levels had a near-death experience, and previous studies have found that demographic and psychological factors are also involved.

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另一方面，像乔治·汉布利那些人，他们反对这种观点，认为我们不应该为空气中二氧化碳含量高担心。

On the other hand, there are those, like George Hambley, who are opposed to this view, believe that we should not worry about high levels of carbon dioxide in the air.

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