横向
1
Imaginary line around the middle of Earth
3
Largest ocean on Earth
6
Flat grassland in tropical regions
7
Narrow sea inlet between cliffs
11
Vast body of salt water
12
Visual representation of an area
纵向
2
Largest hot desert in the world
4
Region between the two tropic lines
5
Line dividing two countries
8
Region surrounding the North Pole
9
Land surrounded by water on three sides
10
Large natural stream of water
13
Deep narrow valley with steep sides