横向
1
One of seven major landmasses
6
Cold treeless Arctic plain
7
Flat grassland in tropical regions
8
Wearing away of land by water or wind
11
Low area between mountains
14
Large natural stream of water
纵向
2
Goods brought in from another country
3
Large area covered with trees
4
Large natural elevation of earth
5
Dry land with little rainfall
9
Visual representation of an area
10
Ocean between Americas and Europe/Africa
12
Land surrounded by water
13
Tool for finding directions