横向
1
Physical features of land
4
Steep rock face at edge of land
6
Wearing away of land by water or wind
9
Region between the two tropic lines
纵向
2
Where river meets the sea
3
Distance east or west of prime meridian
5
Goods brought in from another country
7
Seasonal heavy rainfall
8
Total number of people in an area
10
Area where water covers the soil
11
Region near the equator
