横向
1
Largest hot desert in the world
4
One of seven major landmasses
5
Distance east or west of prime meridian
6
Ridge of rock or coral near the surface
纵向
2
Largest ocean on Earth
3
Imaginary line around the middle of Earth
4
Deep narrow valley with steep sides
7
Raised area of land, smaller than a mountain
8
Line dividing two countries
9
Large area covered with trees
10
Cold treeless Arctic plain
11
Low area between mountains
12
City that is seat of government