横向
1
Height above sea level
4
Region between the two tropic lines
7
Line dividing two countries
8
Largest river in South America
10
Flat elevated area of land
纵向
2
Goods sold to another country
3
Large body of water partly enclosed by land
5
Low area between mountains
6
Long-term weather patterns of an area
9
Total number of people in an area
11
Land surrounded by water on three sides