横向
1
Physical features of land
5
Largest ocean on Earth
6
Flat grassland in tropical regions
7
Low area between mountains
11
Large natural stream of water
12
Distance east or west of prime meridian
13
Ridge of rock or coral near the surface
纵向
2
Area where water covers the soil
3
Large slow-moving mass of ice
4
Body of water surrounded by land
7
Mountain that can erupt with lava
8
Tool for finding directions
9
Region near the equator
10
Chain or group of islands