横向
1
Land surrounded by water
4
Seasonal heavy rainfall
5
Large slow-moving mass of ice
10
Ridge of rock or coral near the surface
11
Largest river in South America
12
Physical features of land
13
Vast body of salt water
纵向
2
Large area covered with trees
3
Flat elevated area of land
6
Line dividing two countries
7
Tool for finding directions
8
Distance east or west of prime meridian
9
Large natural stream of water