横向
1
Large natural elevation of earth
5
Wearing away of land by water or wind
8
Region between the two tropic lines
9
Long-term weather patterns of an area
11
City that is seat of government
12
Cold treeless Arctic plain
纵向
2
Region surrounding the North Pole
3
Tool for finding directions
4
Mountain that can erupt with lava
6
Ridge of rock or coral near the surface
7
Flat elevated area of land
10
Largest river in South America