横向
1
Seasonal heavy rainfall
3
Largest ocean on Earth
6
Landform where river meets the sea
7
Low-lying land surrounded by higher ground
8
Area where water covers the soil
9
Large area covered with trees
10
Low area between mountains
纵向
2
Flat grassland in tropical regions
4
Mountain that can erupt with lava
5
Ocean between Americas and Europe/Africa
6
Dry land with little rainfall