横向
1
Flat grassland in tropical regions
4
Region near the equator
8
Large body of water partly enclosed by land
9
Large area covered with trees
10
Half of the Earth
11
Low-lying land surrounded by higher ground
纵向
2
Land surrounded by water on three sides
3
Largest river in South America
5
Goods sold to another country
6
Large natural elevation of earth
7
Mountain that can erupt with lava