Petrographic
a. 岩相学的；岩类学的
🗣️ 情景例句
Of course. It's on the fifth floor of Building No.4. Let's go there.
当然可以。展室在四号楼五层，我们上去吧。
What skill! What luck! What fun!
多有本事！多么走运！多令人兴奋！
Let me help you. Do it like this.
我来帮你，要这样做。