横向
1
Large body of water partly enclosed by land
2
Goods sold to another country
3
Wearing away of land by water or wind
5
Total number of people in an area
7
Region surrounding the North Pole
9
Area where water covers the soil
10
Largest ocean on Earth
纵向
2
Imaginary line around the middle of Earth
4
Half of the Earth
6
Landform where river meets the sea
8
Region between the two tropic lines