横向
1
Wearing away of land by water or wind
5
Goods brought in from another country
6
Region between the two tropic lines
7
Largest river in South America
12
Ridge of rock or coral near the surface
13
Height above sea level
纵向
2
Large slow-moving mass of ice
3
Large area covered with trees
4
Imaginary line around the middle of Earth
8
Low-lying land surrounded by higher ground
9
Deep narrow valley with steep sides
10
Tool for finding directions
11
One of seven major landmasses