Petrographical
a. 岩相学的, 岩类学的
🗣️ 情景例句
Come with me, Carl.
跟我来 ，Carl。
I often have lunch at noon.
我常常在中午吃午饭。
The study of custom can be profitable only after certain preliminary propositions have been accepted,
只有在某些基本的主张被接受下来、同时有些主张被激烈反对时，