横向
1
Low-lying land surrounded by higher ground
4
Mountain that can erupt with lava
7
Wearing away of land by water or wind
9
Goods sold to another country
纵向
2
Raised area of land, smaller than a mountain
3
City that is seat of government
5
Flat grassland in tropical regions
6
Long-term weather patterns of an area
8
Physical features of land