oreography

例句：

1. 1. The study of the earth's crust and its movement is called geophysics.
   研究地球的地壳及其运动被称为地质学。
2. 2. Geologists study rocks and minerals to understand the Earth's history.
   地质学家研究岩石和矿物以了解地球的历史。
3. 3. The Yellow River is a major river in China, and its geography has been studied extensively.
   黄河是中国的主要河流，其地理特征已广泛研究。