横向
1
Flat grassland in tropical regions
5
One of seven major landmasses
6
Raised area of land, smaller than a mountain
7
Ridge of rock or coral near the surface
8
Seasonal heavy rainfall
9
Low-lying land surrounded by higher ground
纵向
2
Large natural stream of water
3
Largest river in South America
4
Land surrounded by water on three sides
5
Steep rock face at edge of land
10
Region near the equator
11
Large natural elevation of earth