Kerogen
n. 油母岩\\n[化] 油母质
🗣️ 情景例句
I can't express myself very well in English.
我用英语表达不好。
As a man lives,so shall he die.
有生必有死。
The first thing I saw when I entered the art gallery was a notice which said:
走进展厅首先看到的是一张告示，上面写着