横向
1
Seasonal heavy rainfall
5
Largest ocean on Earth
6
Large natural elevation of earth
7
Imaginary line around the middle of Earth
9
Region surrounding the North Pole
纵向
2
Largest river in South America
3
Flat grassland in tropical regions
4
Distance east or west of prime meridian
5
Land surrounded by water on three sides
8
Mountain that can erupt with lava