横向
1
Deep narrow valley with steep sides
4
Region near the equator
5
Height above sea level
6
Flat elevated area of land
7
Where river meets the sea
12
Line dividing two countries
纵向
2
Low area between mountains
3
One of seven major landmasses
8
Region surrounding the North Pole
9
Large area covered with trees
10
Visual representation of an area
11
Goods brought in from another country
13
Large body of water partly enclosed by land