Bound to two atoms of oxygen, it creates carbon dioxide, the chief greenhouse gas that has kept our planet warm for billions of years - and is now, thanks to human activity, making us too warm.

碳原子和两个氧原子相结合组成了二氧化碳，是数十亿年来保持我们地球温度的重要温室气体。但是近些年来由于人类的活动，地球温度不断上升，导致温度过高。

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Although many sources of gas are already bound up in long-term contracts, optimists think Britain might be able to get more of it fairly easily.

尽管许多天然气的来源在长期合同中受到限制，乐观主义者认为英国仍有能力轻易获得更多的天然气来源。

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That's because planets bound to a parent star would only reflect the survivors, not how many gas giant planets actually formed.

目前与恒星相伴的行星都是那场角力中的幸存者，并不能说明实际上有多少气态巨行星形成。

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It has become even more crucial as a potential transit route for Europe-bound natural gas from energy-rich Azerbaijan and Central Asia, as well as from Iraq (and eventually Iran).

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If a gas has bound to the the nanotubes it will impede the electron flow, altering the current.

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The prospect of shale gas exploration and the use of fracking to release the gas is bound to be controversial in communities affected.

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