横向
1
Seasonal heavy rainfall
4
Imaginary line around the middle of Earth
5
Body of water surrounded by land
6
Area where water covers the soil
10
Largest river in South America
11
Large natural stream of water
12
Large natural elevation of earth
纵向
2
Large area covered with trees
3
Half of the Earth
4
Goods sold to another country
7
Flat grassland in tropical regions
8
Ridge of rock or coral near the surface
9
Region surrounding the North Pole