We all know that trees can be recycled carbon dioxide, with a large number of felled trees, the number of trees will be drastically reduced, we can not be exhaled carbon dioxide cycle.

大家都知道树木可以循环二氧化碳，如果大量砍伐树木，树木的数量就会急剧减少，我们呼出的二氧化碳无法得到循环。

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The oceans are a key part of the natural carbon cycle, in which carbon dioxide is circulated between the land, seas and atmosphere.

在自然的碳循环中，二氧化碳于陆地、海洋和大气中流通，海洋是其中一个关键的环节。

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Researchers think that the carbon cycle turns over about 330 billion tonnes of carbon dioxide each year. Oceans absorb about half this.

研究人员认为，每年碳循环都会周转大约3300亿吨二氧化碳，其中的一半都被海洋吸收。

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Carbon dioxide pumped into carbon cycle, is not.

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Researchers think that the carbon cycle turns over about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon-dioxide emissions

Researchers think that the carbon cycle adds up to the production of about 330 billion tonnes of carbon dioxide each year.

ECONOMIST: Two new satellites will monitor carbon dioxide emissions