Kerogen
n. 油母岩\\n[化] 油母质
🗣️ 情景例句
I've never seen you so wound up.
我从来没有看过你这么紧张。
To show our gratitude to all of you for being our reliable business partners.
为表达我们对你们——我们值得信赖的生意伙伴的感谢。
That is John Smith,isn't it?
你是约翰。史密斯，对吗？