横向
1
Height above sea level
5
Goods brought in from another country
6
Deep narrow valley with steep sides
7
Chain or group of islands
8
Low area between mountains
10
Physical features of land
纵向
2
Wearing away of land by water or wind
3
Flat grassland in tropical regions
4
Area where water covers the soil
9
Visual representation of an area
11
Total number of people in an area