横向
1
Physical features of land
5
Region between the two tropic lines
6
Low area between mountains
9
Wearing away of land by water or wind
纵向
2
Large natural stream of water
3
Flat grassland in tropical regions
4
Land surrounded by water on three sides
7
Mountain that can erupt with lava
8
Long-term weather patterns of an area
10
Ridge of rock or coral near the surface