横向
1
Imaginary line around the middle of Earth
2
Low area between mountains
5
Wearing away of land by water or wind
6
Land surrounded by water on three sides
纵向
2
Mountain that can erupt with lava
3
Area where water covers the soil
4
Narrow sea inlet between cliffs
7
Line dividing two countries
8
Raised area of land, smaller than a mountain
9
Region between the two tropic lines