adj. petrochemical
还有一些石化的花粉，来自于曾经生长在撒哈拉的小灌木丛和草丛。
Then there is fossilized pollen, from low shrubs and grasses that once grew in the Sahara.
促进软体动物石化的条件包括沉积物的迅速覆盖，以创造一个防止其分解的环境。
Conditions that promote fossilization of soft-bodied animals include very rapid covering by sediments that create an environment that discourages decomposition.
寒武纪大爆发后不久，泥石流迅速将数千只海洋动物掩埋在有利于石化的条件下。
Shortly after the Cambrian explosion, mud slides rapidly buried thousands of marine animals under conditions that favored fossilization.
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