横向
1
Wearing away of land by water or wind
3
Visual representation of an area
6
Mountain that can erupt with lava
9
Low-lying land surrounded by higher ground
10
Goods brought in from another country
纵向
1
Goods sold to another country
2
Large natural elevation of earth
4
Largest ocean on Earth
5
Vast body of salt water
7
Cold treeless Arctic plain
8
Distance east or west of prime meridian