Regolith
n. （=mantlerock）[地质]风化层, 土被
🗣️ 情景例句
My first grandchild.
我的第一个孙子。
I wrote several letters on my mother's behalf.
我代表我母亲写了几封信。
always respects a parent who admits that he is wrong,
他们总是尊敬的，对于能够承认错误或无知、