THE natural processes which dispose of carbon dioxide are, in aggregate, rather slow, which means that an increase in the atmosphere’s carbon-dioxide level will, left to itself, last a long time.
就总体而言，二氧化碳排放的自然过程是相当慢的，这便意味着，在对二氧化碳放任不管的情况下，大气层中二氧化碳含量在很长时间内都会持续增加。
I believe it difficult to dispose of the job in such a short time.
我觉得要在如此短的时间内办妥这件事是困难的。
THE natural processes which dispose of carbon dioxide are, in aggregate, rather slow, which means that an increase in the atmosphere's carbon-dioxide level will, left to itself, last a long time.
总体来讲，处理（或清除）二氧化碳的自然过程是相当缓慢的，这意味着大气中增加的二氧化碳含量如果靠自然过程处理，会持续很久。
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