横向
1
Region between the two tropic lines
5
Ridge of rock or coral near the surface
6
Height above sea level
8
Steep rock face at edge of land
10
Flat grassland in tropical regions
11
Seasonal heavy rainfall
12
Body of water surrounded by land
纵向
2
Deep narrow valley with steep sides
3
Chain or group of islands
4
Large area covered with trees
7
Cold treeless Arctic plain
9
Landform where river meets the sea