横向
1
Tool for finding directions
3
Distance north or south of equator
4
Large natural stream of water
7
Low area between mountains
9
Wearing away of land by water or wind
纵向
1
Deep narrow valley with steep sides
2
Physical features of land
5
Goods brought in from another country
6
Flat grassland in tropical regions
8
Piece of land jutting into the sea
