And in many cases this dust is laced with complex molecules called polycyclic aromatic hydrocarbons.

在许多情况下，这些尘埃中还夹杂着一种叫做多环芳烃的复杂分子。

The kind of organic molecules observed are called polycyclic aromatic hydrocarbons, or PAHs.

这种被观测到的有机分子被称为多环芳香烃。

Conversely, burning wood or dung can create polycyclic aromatic hydrocarbons; dangerous compounds that have been linked to several types of cancer, as well as long-term DNA damage.

相反地，燃烧木头或粪肥会产生多环芳香烃；它们是危险的化合物，和多种癌症和长期的 DNA 损伤有关。