横向
1
Distance east or west of prime meridian
3
Largest hot desert in the world
5
Wearing away of land by water or wind
10
Large body of water partly enclosed by land
11
Flat grassland in tropical regions
13
City that is seat of government
纵向
2
Total number of people in an area
4
Large natural elevation of earth
5
Goods sold to another country
6
Where river meets the sea
7
Goods brought in from another country
8
Large slow-moving mass of ice
9
Ocean between Americas and Europe/Africa
12
Body of water surrounded by land