Biostratonomy
生物埋藏学
🗣️ 情景例句
Thank you.
谢谢 。
Health and cheerfulness mutually beget each other.
健康愉快，相生相成。
Many of the stars cannot be seen because they are too far away.
许多星星我们之所以看不见，是因为它们离我们太远。