横向
1
Distance east or west of prime meridian
4
Largest ocean on Earth
5
Physical features of land
6
Ridge of rock or coral near the surface
8
Dry land with little rainfall
10
Ocean between Americas and Europe/Africa
12
Area where water covers the soil
纵向
2
Goods sold to another country
3
Distance north or south of equator
7
Imaginary line around the middle of Earth
9
Region between the two tropic lines
11
Flat grassland in tropical regions