横向
1
Flat elevated area of land
5
Line dividing two countries
6
Largest river in South America
8
Raised area of land, smaller than a mountain
纵向
2
Large body of water partly enclosed by land
3
Area where water covers the soil
4
Distance east or west of prime meridian
7
Seasonal heavy rainfall
9
Body of water surrounded by land
10
Tool for finding directions