Once dispersed , the oil can then be broken down more easily by bacteria that have evolved to live off natural sources of hydrocarbons.

一旦被（化学）分散，随后浮油就更容易被进化到以碳氢化合物等天然污染源为食的细菌降解。

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Workers quickly fixed a minor leak in a cat cracking unit--where complex hydrocarbons in crude are broken down into smaller molecules.

FORBES: No Time To Waste