Although change in carbon dioxide content closely follows change in temperature during periods of deglaciation, it apparently lags behind temperature during periods of cooling.

虽然在冰川消退期间二氧化碳含量的变化与温度的变化密切相关，但它显然滞后于冷却期间的温度。

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In large towns the carbon dioxide content may be slightly higher than in country districts.

在大城镇里，二氧化碳的含量会略高于乡下。

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While photosynthetic life reduced the carbon dioxide content of the atmosphere, it also started to produce oxygen.

光合作用的生物在还原空气里的二氧化碳的同时也消耗氧气。

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The Gorgon gas has a high 14% content of naturally occurring carbon dioxide.

FORBES: Magazine Article

This gas contains approximately 80% of the original energy content of the coal, and is a combination of hydrogen, carbon monoxide, carbon dioxide, and methane.

FORBES: Underground Coal Gasification: A Trend Worth Watching