Topostratigraphy
地方地层学
🗣️ 情景例句
saying he was going to the railroad station
说他要去火车站
My son wants to be a policeman when he grows up.
当他长大时，我的儿子想要成为一个警察。
By the end of next year, they will have finished work on the new stadium.
到明年年底，他们将把新体育场建成。