横向
1
Low area between mountains
4
Imaginary line around the middle of Earth
5
Cold treeless Arctic plain
6
Goods brought in from another country
7
Tool for finding directions
8
Physical features of land
10
Region near the equator
纵向
2
Largest river in South America
3
Large area covered with trees
4
Wearing away of land by water or wind
9
Low-lying land surrounded by higher ground
11
Ocean between Americas and Europe/Africa