横向
1
Cold treeless Arctic plain
4
Where river meets the sea
6
Body of water surrounded by land
9
Narrow sea inlet between cliffs
10
Low-lying land surrounded by higher ground
纵向
2
Flat elevated area of land
3
Long-term weather patterns of an area
5
Wearing away of land by water or wind
7
Distance east or west of prime meridian
8
Total number of people in an area