横向
1
Largest ocean on Earth
2
Raised area of land, smaller than a mountain
5
Flat grassland in tropical regions
6
Largest river in South America
7
Visual representation of an area
8
Vast body of salt water
10
Chain or group of islands
纵向
2
Half of the Earth
3
Long-term weather patterns of an area
4
City that is seat of government
9
Region surrounding the North Pole
11
Physical features of land
12
Deep narrow valley with steep sides