Lithogeny
岩石成因学
🗣️ 情景例句
A little further back, Tom.
再往后一点 Tom。
I ought to see a doctoe at once.
我应该立刻去看医生。
As he had never been there before, he found a great deal to interest him.
由于他从未去过那儿，结果他发现许多有趣的东西。