横向
1
Total number of people in an area
2
Chain or group of islands
7
Land surrounded by water
9
Ridge of rock or coral near the surface
纵向
2
Height above sea level
3
Body of water surrounded by land
4
Imaginary line around the middle of Earth
5
Land surrounded by water on three sides
6
Large natural elevation of earth
8
Dry land with little rainfall
10
Line dividing two countries