横向
1
Distance east or west of prime meridian
4
Body of water surrounded by land
7
Ocean between Americas and Europe/Africa
8
Wearing away of land by water or wind
纵向
2
Low area between mountains
3
Piece of land jutting into the sea
5
Height above sea level
6
Total number of people in an area
9
Vast body of salt water
10
Distance north or south of equator
11
Flat grassland in tropical regions