横向
1
Imaginary line around the middle of Earth
3
Steep rock face at edge of land
7
Area where water covers the soil
8
Body of water surrounded by land
9
Goods brought in from another country
10
One of seven major landmasses
纵向
2
Total number of people in an area
4
Large area covered with trees
5
Large slow-moving mass of ice
6
Goods sold to another country
11
Largest ocean on Earth
12
Large natural elevation of earth