横向
1
Flat grassland in tropical regions
5
Region near the equator
6
Large body of water partly enclosed by land
7
Largest river in South America
8
Total number of people in an area
9
Area where water covers the soil
10
Wearing away of land by water or wind
13
Distance north or south of equator
15
Region surrounding the North Pole
纵向
2
Ocean between Americas and Europe/Africa
3
Distance east or west of prime meridian
4
Land surrounded by water on three sides
11
Piece of land jutting into the sea
12
Large slow-moving mass of ice
14
Line dividing two countries