横向
1
Region surrounding the North Pole
4
Largest river in South America
5
Flat elevated area of land
9
Land surrounded by water on three sides
10
Chain or group of islands
纵向
2
Low-lying land surrounded by higher ground
3
Region near the equator
6
Low area between mountains
7
Largest hot desert in the world
8
Flat grassland in tropical regions
11
Body of water surrounded by land
12
Long-term weather patterns of an area