横向
1
Ocean between Americas and Europe/Africa
5
Area where water covers the soil
6
Wearing away of land by water or wind
9
Ridge of rock or coral near the surface
10
Visual representation of an area
14
Largest river in South America
纵向
2
Distance east or west of prime meridian
3
Where river meets the sea
4
Large slow-moving mass of ice
7
Large natural elevation of earth
8
Imaginary line around the middle of Earth
11
Region near the equator
12
Low area between mountains
13
Line dividing two countries