横向
1
Total number of people in an area
7
Large natural elevation of earth
8
Goods sold to another country
9
Large slow-moving mass of ice
10
Imaginary line around the middle of Earth
纵向
2
Low area between mountains
3
Half of the Earth
4
Cold treeless Arctic plain
5
Visual representation of an area
6
Flat grassland in tropical regions
11
Raised area of land, smaller than a mountain