横向
1
Seasonal heavy rainfall
3
Large natural stream of water
7
Piece of land jutting into the sea
8
Distance north or south of equator
9
Visual representation of an area
10
Wearing away of land by water or wind
11
Low area between mountains
纵向
1
Large natural elevation of earth
2
Physical features of land
4
Flat grassland in tropical regions
5
Largest river in South America
6
Raised area of land, smaller than a mountain