横向
1
Landform where river meets the sea
2
Ocean between Americas and Europe/Africa
4
Distance east or west of prime meridian
5
Goods sold to another country
6
Seasonal heavy rainfall
7
Largest river in South America
10
Line dividing two countries
11
Large body of water partly enclosed by land
纵向
2
Height above sea level
3
Cold treeless Arctic plain
5
Where river meets the sea
8
Low-lying land surrounded by higher ground
9
Mountain that can erupt with lava