The chemical bond water, tar, partial sulfur and gas escape from coal during rapid pyrolysis.

煤在快速热解过程中脱除热解水、焦油、部分的硫和煤气。

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Release valves designed to let leaking gas escape could not let it out fast enough to prevent the damage.

设计来让泄露的气体排出的释放阀没有足够快的避免损坏。

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Instead of letting this gas escape and pollute the air, some waste management companies are employing a capture and purification system that allows them to convert the landfill gas (LFG) into energy.

取代允许这种气体自由挥发并污染空气的是，一些废物处理公司采用收集净化系统，使得他们可以把这种气体(LFG)转化成能量。

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That has created concerns about the consequences for climate change should the gas escape into the atmosphere during drilling.

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There is also a risk that large amounts of methane, a powerful greenhouse gas, could escape during shale-gas exploration and production.

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The most efficient way we have now to capture CO2 is to remove it from flue gas as the emissions escape.

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