横向
1
Flat grassland in tropical regions
4
Raised area of land, smaller than a mountain
5
Goods sold to another country
6
Half of the Earth
8
Large natural elevation of earth
10
Seasonal heavy rainfall
11
Dry land with little rainfall
12
Narrow sea inlet between cliffs
纵向
2
Large natural stream of water
3
Height above sea level
7
Largest river in South America
9
Land surrounded by water
13
Landform where river meets the sea