横向
1
Area where water covers the soil
5
Distance east or west of prime meridian
6
Large area covered with trees
8
Flat elevated area of land
9
Largest ocean on Earth
13
Wearing away of land by water or wind
纵向
2
Steep rock face at edge of land
3
Body of water surrounded by land
4
Narrow sea inlet between cliffs
7
Height above sea level
10
Imaginary line around the middle of Earth
11
Flat grassland in tropical regions
12
Dry land with little rainfall