Macrostratigraphy
宏观地层学
🗣️ 情景例句
I can act on it.
我就可以处理。
I can't promise anything,but I'll do my best.
不敢保证，不过我尽力而为。
I'm afraid that Jim will miss a lot of his lessons.
恐怕这么一来，吉姆要缺很多课了。