横向
1
Land surrounded by water
4
Goods brought in from another country
6
Goods sold to another country
9
Seasonal heavy rainfall
11
Flat grassland in tropical regions
12
Region between the two tropic lines
纵向
2
Physical features of land
3
Area where water covers the soil
5
Narrow sea inlet between cliffs
7
Total number of people in an area
8
Where river meets the sea
10
Distance north or south of equator