横向
1
Goods sold to another country
3
Large body of water partly enclosed by land
5
Landform where river meets the sea
6
Largest ocean on Earth
7
Land surrounded by water
8
Total number of people in an area
纵向
2
Goods brought in from another country
3
Large slow-moving mass of ice
4
Large natural elevation of earth
9
Where river meets the sea
10
Flat grassland in tropical regions
11
Region surrounding the North Pole
12
Half of the Earth
13
Wearing away of land by water or wind