The large amount of methane contained in the atmosphere surrounding Neptune stained it blue.

围绕海王星的气层内所含大量甲烷将它染成了蓝色。

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The lower the temperature, the higher the amount of methane emissions.

温度越低，沼气的释放量越高。

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So far the amount of methane is too small to have a significant impact on the Earth's temperature.

目前，释放的甲烷气体的量还很小，对地球的温度没有太大的影响。

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They are also engaged in ongoing research into the amount of methane hydrate under this area of the ocean floor.

BBC: Methane seeps from Arctic sea-bed

To date no technology has been able to accurately measure and quantify the amount of methane emitted from fracking sites and other natural gas fields over a large scale.

FORBES: The New Tech that Aims to Make Methane Leaks a Thing of the Past

As to what happened to the Palaeocene fauna, the evidence points not towards an errant asteroid but to a giant burp from the oceans, which released a huge amount of methane.

ECONOMIST: Rewriting the history of the mammals