横向
1
Flat grassland in tropical regions
5
Visual representation of an area
6
Region surrounding the North Pole
7
Distance east or west of prime meridian
9
Ridge of rock or coral near the surface
10
Largest river in South America
纵向
2
Imaginary line around the middle of Earth
3
Long-term weather patterns of an area
4
Chain or group of islands
8
Wearing away of land by water or wind