横向
1
Large slow-moving mass of ice
5
Total number of people in an area
6
Cold treeless Arctic plain
7
Large natural stream of water
10
Flat elevated area of land
11
Seasonal heavy rainfall
纵向
2
Wearing away of land by water or wind
3
Goods brought in from another country
4
Low-lying land surrounded by higher ground
8
Flat grassland in tropical regions
9
Chain or group of islands