In 1998, energy consumption in the transport sector was to blame for 28% of emissions of CO2, the leading greenhouse gas.

1998年，运输业的能源消耗导致了28%的二氧化碳排放，而二氧化碳是主要的温室气体。

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We cannot let the CO2 in the atmosphere rise indefinitely.

我们不能让大气中的二氧化碳无限制地升高。

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After burning, it changes into water and CO2.

经过燃烧，它变成了水和二氧化碳。

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Methane, there are certainly some solid bonds there, but breaking those to form CO2 and water, well it's worth it, right, energetically.

酒精中的确含有很强的化学键，但是打断这些化学键然后生成二氧化碳和水，从能量上来看是值得的。

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You burn methane, and it combines with oxygen to form water, to form CO2.

燃烧酒精，酒精分子和氧气结合形成水和二氧化碳。

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And, there's a huge amount of CO2 that comes from this process.

大量的二氧化碳2,来自于这一生产过程。

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