横向
1
Seasonal heavy rainfall
4
Low area between mountains
7
Deep narrow valley with steep sides
9
Goods sold to another country
10
Distance north or south of equator
11
Ocean between Americas and Europe/Africa
纵向
2
Largest river in South America
3
Chain or group of islands
5
Cold treeless Arctic plain
6
Wearing away of land by water or wind
8
Flat elevated area of land