Kerogenesis
新生性变态, 不适发育
🗣️ 情景例句
Nothing will stay down when I eat.
我吃下去的东西全吐出来了。
Beard the lion in his den.
老虎头上捉虱；太岁头上动土。
It's often cold in December, January and February.It snows sometimes.
12月、1月和2月常常很冷，有时还下雪。