横向
1
Where river meets the sea
4
Largest river in South America
5
Landform where river meets the sea
6
Wearing away of land by water or wind
7
City that is seat of government
纵向
2
Visual representation of an area
3
Physical features of land
4
Region surrounding the North Pole
7
Deep narrow valley with steep sides
8
Raised area of land, smaller than a mountain
9
Large body of water partly enclosed by land
10
Distance east or west of prime meridian