横向
1
Imaginary line around the middle of Earth
5
One of seven major landmasses
6
Dry land with little rainfall
7
Cold treeless Arctic plain
8
Long-term weather patterns of an area
10
Steep rock face at edge of land
纵向
2
Region between the two tropic lines
3
Ridge of rock or coral near the surface
4
Landform where river meets the sea
9
Deep narrow valley with steep sides
11
Mountain that can erupt with lava