横向
1
Large natural stream of water
3
Large natural elevation of earth
5
Physical features of land
6
Distance north or south of equator
8
Land surrounded by water on three sides
11
Large area covered with trees
12
Flat grassland in tropical regions
纵向
2
Where river meets the sea
4
Land surrounded by water
7
Goods brought in from another country
9
Cold treeless Arctic plain
10
Wearing away of land by water or wind
13
Piece of land jutting into the sea