横向
1
Area where water covers the soil
4
Deep narrow valley with steep sides
7
Largest river in South America
8
Largest ocean on Earth
9
Landform where river meets the sea
10
Dry land with little rainfall
纵向
2
Where river meets the sea
3
Largest hot desert in the world
5
Distance east or west of prime meridian
6
Large slow-moving mass of ice