横向
1
Large natural elevation of earth
5
Large area covered with trees
6
Land surrounded by water
8
Largest hot desert in the world
10
Goods brought in from another country
纵向
2
Low-lying land surrounded by higher ground
3
Steep rock face at edge of land
4
Largest river in South America
7
Region near the equator
9
Region surrounding the North Pole
11
Area where water covers the soil