横向
1
Chain or group of islands
5
Largest river in South America
8
Total number of people in an area
9
Region between the two tropic lines
11
Imaginary line around the middle of Earth
纵向
2
Line dividing two countries
3
Deep narrow valley with steep sides
4
Mountain that can erupt with lava
6
Physical features of land
7
Visual representation of an area
10
Landform where river meets the sea