横向
1
Raised area of land, smaller than a mountain
2
Deep narrow valley with steep sides
6
Mountain that can erupt with lava
7
Long-term weather patterns of an area
8
Largest hot desert in the world
9
Wearing away of land by water or wind
纵向
2
Steep rock face at edge of land
3
Cold treeless Arctic plain
4
Land surrounded by water on three sides
5
Body of water surrounded by land