Macrostratigraphy
宏观地层学
🗣️ 情景例句
It's a wonderful opportunity, Richard.
这是一个好机会 Richard。
How long is the ticket valid?
这车票有效期多久？
She's not feeling well. I told her to stay in bed till tomorrow.
她感觉不好。我叫她在床上躺着，一直到明天。