横向
1
Dry land with little rainfall
4
Ocean between Americas and Europe/Africa
5
Flat elevated area of land
6
Landform where river meets the sea
8
Total number of people in an area
11
Long-term weather patterns of an area
纵向
2
Goods brought in from another country
3
Goods sold to another country
7
Low area between mountains
9
Flat grassland in tropical regions
10
Wearing away of land by water or wind
12
Imaginary line around the middle of Earth
13
City that is seat of government