横向
1
Height above sea level
4
Imaginary line around the middle of Earth
6
Largest river in South America
8
Tool for finding directions
纵向
2
Flat grassland in tropical regions
3
Area where water covers the soil
4
Where river meets the sea
5
Body of water surrounded by land
7
Low-lying land surrounded by higher ground
9
Large slow-moving mass of ice
10
Deep narrow valley with steep sides
11
Landform where river meets the sea