横向
1
Large natural elevation of earth
6
Distance north or south of equator
7
Goods sold to another country
8
Large natural stream of water
9
Wearing away of land by water or wind
纵向
2
Distance east or west of prime meridian
3
Cold treeless Arctic plain
4
Height above sea level
5
Mountain that can erupt with lava
10
Dry land with little rainfall
11
Flat elevated area of land
12
Total number of people in an area