横向
1
Imaginary line around the middle of Earth
3
Low area between mountains
5
Deep narrow valley with steep sides
7
Physical features of land
8
Largest hot desert in the world
9
Largest ocean on Earth
纵向
1
Where river meets the sea
2
Large area covered with trees
4
Distance north or south of equator
5
Steep rock face at edge of land
6
Goods brought in from another country