横向
1
Steep rock face at edge of land
4
Region between the two tropic lines
5
Cold treeless Arctic plain
9
Total number of people in an area
10
Region near the equator
11
Goods brought in from another country
12
Low area between mountains
纵向
2
Wearing away of land by water or wind
3
Region surrounding the North Pole
6
Large natural elevation of earth
7
Flat elevated area of land
8
Imaginary line around the middle of Earth
13
Where river meets the sea