横向
1
Largest ocean on Earth
6
Half of the Earth
7
Steep rock face at edge of land
8
Physical features of land
9
Cold treeless Arctic plain
纵向
2
Largest river in South America
3
Large body of water partly enclosed by land
4
Tool for finding directions
5
Ocean between Americas and Europe/Africa
10
Large natural stream of water
11
Line dividing two countries