横向
1
Line dividing two countries
4
Flat grassland in tropical regions
5
Raised area of land, smaller than a mountain
6
Largest ocean on Earth
7
Flat elevated area of land
8
Region near the equator
纵向
2
Imaginary line around the middle of Earth
3
Half of the Earth
9
Land surrounded by water on three sides
10
Height above sea level
11
Where river meets the sea
12
Largest hot desert in the world