Regolith
n. （=mantlerock）[地质]风化层, 土被
🗣️ 情景例句
What? Who?
什么 ，是谁？
The whole class is in a heated discussion.
全班同学正在热烈讨论。
He had lived in it as a child when it was already disappearing,
作为一个孩子他曾在西部生活过，当时西部拓荒生活正在消失。