横向
1
Half of the Earth
5
Imaginary line around the middle of Earth
6
Goods brought in from another country
纵向
2
Largest river in South America
3
Low-lying land surrounded by higher ground
4
Region surrounding the North Pole
7
Flat grassland in tropical regions
8
Large slow-moving mass of ice
9
Visual representation of an area
10
Total number of people in an area
11
Raised area of land, smaller than a mountain