横向
1
Low-lying land surrounded by higher ground
4
Steep rock face at edge of land
7
Distance north or south of equator
8
Large slow-moving mass of ice
9
Largest river in South America
10
Region surrounding the North Pole
纵向
2
Body of water surrounded by land
3
Vast body of salt water
5
Goods brought in from another country
6
Ridge of rock or coral near the surface
11
Visual representation of an area
12
Landform where river meets the sea