横向
1
Region between the two tropic lines
3
Largest river in South America
5
Mountain that can erupt with lava
6
Flat elevated area of land
9
Body of water surrounded by land
10
Distance north or south of equator
11
Where river meets the sea
纵向
1
Cold treeless Arctic plain
2
Visual representation of an area
4
Deep narrow valley with steep sides
7
Low area between mountains
8
One of seven major landmasses