横向
1
Ridge of rock or coral near the surface
3
Flat grassland in tropical regions
6
Half of the Earth
7
Seasonal heavy rainfall
11
Physical features of land
纵向
1
Large natural stream of water
2
Piece of land jutting into the sea
4
Cold treeless Arctic plain
5
Area where water covers the soil
8
Low-lying land surrounded by higher ground
9
Chain or group of islands
10
Largest ocean on Earth