Other data from the Vostok core show that methane gas also correlates closely with temperature and carbon dioxide.

来自 Vostok 地核的其他数据显示，甲烷气体也与温度和二氧化碳密切相关。

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Diesel exhaust particles, a major part of urban smog, consist of a carbon core coated with organic chemicals and metals.

柴油车尾气粒子，是城市烟雾的主要组成部分，是由外表包裹着有机化学和五金的碳芯组成的。

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Red giants are hot enough to turn the helium at their core, which was made by fusing hydrogen, into heavy elements like carbon.

红巨星的温度足够高，可以将其核心中由氢聚变成的氦再转变为重元素，比如碳。

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He insists that industry, as well as governments, must tackle the core issues, rather than trying to rid themselves of responsibility through measures like carbon offsetting - where individuals or companies balance their carbon output by financing green projects.

BBC: A hiker looks out over a mountain in Switzerland