横向
1
Dry land with little rainfall
4
Flat grassland in tropical regions
5
Deep narrow valley with steep sides
6
Wearing away of land by water or wind
10
Distance east or west of prime meridian
纵向
2
Vast body of salt water
3
Largest hot desert in the world
7
Piece of land jutting into the sea
8
Land surrounded by water on three sides
9
Region near the equator