1. Kerogen is a key component in the formation of petroleum and natural gas.
化石有机质是石油和天然气形成的主要成分之一。

2. The extraction of kerogen from oil shale has gained attention as a potential energy source.
从油页岩中提取化石有机质已经引起了人们对作为一种潜在能源来源的关注。