Regolith
n. （=mantlerock）[地质]风化层, 土被
🗣️ 情景例句
Your downstairs neighbor let me in.
楼下的邻居让我进来的。
I'm sorry, but it's just not possible.
抱歉，实在是爱莫能助。
Two months later, some more money was sent to Sam with another note: 'Only 25 per cent a thief now!'
“这回只是25%的小偷了！”