横向
1
Largest ocean on Earth
4
Largest hot desert in the world
6
Body of water surrounded by land
8
Chain or group of islands
纵向
2
Low area between mountains
3
Half of the Earth
5
Large natural stream of water
7
Flat grassland in tropical regions
9
Ocean between Americas and Europe/Africa
10
Region near the equator
11
Narrow sea inlet between cliffs
12
Steep rock face at edge of land