The pure gas inclusions of ore-forming period are composed of methane, followed by propane, acetylene and other hydrocarbons, which may indicates Mantle-derived fluids.

成矿期的纯气相包裹体成分为甲烷，其次为丙烷、丁炔等烃类，可能是幔源流体的启示。

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Under normal circumstances, the polycyclic aromatic hydrocarbons help cool down star-forming clouds, allowing them to collapse into stars.

在正常情况下，多欢芳烃帮助冷却下来的恒星形成星云，并让他们再恒星内部崩解。

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The latter include health-damaging and smog-forming airborne pollutants like hydrocarbons, nitrogen oxide, particulate matter, carbon monoxide and formaldehyde, as well as greenhouse gases that contribute to climate change, like carbon dioxide, nitrous oxide, methane and other compounds.

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