Lithostratigraphy
n. 岩石层位学
🗣️ 情景例句
Thanks to you, Richard,
谢谢你， Richard，
No man is wise at all times.
智者千虑，必有一失。
In the beginning they used to carve Chinese characters on stones to record important dates in history.
开始时，他们常把汉字刻在石头上，记载历史上重要的日期。