横向
1
Area where water covers the soil
5
Line dividing two countries
6
Large area covered with trees
7
Flat grassland in tropical regions
8
Large body of water partly enclosed by land
12
Half of the Earth
13
Dry land with little rainfall
纵向
2
Steep rock face at edge of land
3
Flat elevated area of land
4
Narrow sea inlet between cliffs
9
Region near the equator
10
Long-term weather patterns of an area
11
Largest hot desert in the world