横向
1
Half of the Earth
7
Flat grassland in tropical regions
8
Largest hot desert in the world
9
Region near the equator
10
Goods brought in from another country
11
Largest ocean on Earth
12
Deep narrow valley with steep sides
纵向
2
Goods sold to another country
3
Large natural elevation of earth
4
Height above sea level
5
Flat elevated area of land
6
Low area between mountains
13
Cold treeless Arctic plain
14
Long-term weather patterns of an area