Permian
a. 二叠纪的, 二叠纪岩的\\nn. 二叠纪(岩)
🗣️ 情景例句
He has realized how precious health is.
他已经体会到健康的可贵。
Genius often betrays itself into great errors.
天才常被天才误。
It's rude to stare at other people.
盯着别人看是不礼貌的。