横向
1
Visual representation of an area
3
Distance east or west of prime meridian
6
Flat grassland in tropical regions
11
Land surrounded by water on three sides
纵向
2
Largest river in South America
4
Flat elevated area of land
5
Narrow sea inlet between cliffs
7
Seasonal heavy rainfall
8
Wearing away of land by water or wind
9
Area where water covers the soil
10
Large body of water partly enclosed by land