横向
1
Physical features of land
6
Large area covered with trees
7
Flat grassland in tropical regions
8
Large natural elevation of earth
9
Largest ocean on Earth
11
Ridge of rock or coral near the surface
12
Dry land with little rainfall
纵向
2
Deep narrow valley with steep sides
3
Land surrounded by water
4
One of seven major landmasses
5
Where river meets the sea
10
Steep rock face at edge of land
13
Largest hot desert in the world
14
Piece of land jutting into the sea