横向
1
Large area covered with trees
3
Largest river in South America
4
Low-lying land surrounded by higher ground
9
Where river meets the sea
10
Land surrounded by water on three sides
12
Large natural stream of water
纵向
2
Physical features of land
5
Tool for finding directions
6
Imaginary line around the middle of Earth
7
Deep narrow valley with steep sides
8
Land surrounded by water
11
Largest hot desert in the world