横向
1
Flat elevated area of land
6
Long-term weather patterns of an area
8
Wearing away of land by water or wind
10
Deep narrow valley with steep sides
11
Large area covered with trees
纵向
2
Line dividing two countries
3
Body of water surrounded by land
4
Largest hot desert in the world
5
Land surrounded by water on three sides
7
Large natural elevation of earth
9
Mountain that can erupt with lava
12
Large slow-moving mass of ice