横向
1
Largest river in South America
5
Distance east or west of prime meridian
6
Flat grassland in tropical regions
7
Line dividing two countries
纵向
2
City that is seat of government
3
Low-lying land surrounded by higher ground
4
Goods sold to another country
8
Landform where river meets the sea
9
Land surrounded by water
10
Narrow sea inlet between cliffs