横向
1
Large natural stream of water
3
Flat grassland in tropical regions
4
Region near the equator
10
Flat elevated area of land
11
Height above sea level
纵向
2
Largest ocean on Earth
5
Physical features of land
6
Ridge of rock or coral near the surface
7
Ocean between Americas and Europe/Africa
8
Area where water covers the soil
9
Mountain that can erupt with lava