横向
1
Total number of people in an area
6
Where river meets the sea
7
Vast body of salt water
8
Landform where river meets the sea
9
Area where water covers the soil
纵向
2
Large area covered with trees
3
Distance east or west of prime meridian
4
Land surrounded by water on three sides
5
Imaginary line around the middle of Earth
10
Chain or group of islands