横向
1
Distance north or south of equator
4
Largest river in South America
6
Seasonal heavy rainfall
7
Region between the two tropic lines
8
Low area between mountains
10
Raised area of land, smaller than a mountain
纵向
1
Body of water surrounded by land
2
Flat grassland in tropical regions
3
Steep rock face at edge of land
5
Land surrounded by water on three sides
9
Where river meets the sea
11
Goods sold to another country