横向
1
Steep rock face at edge of land
2
Raised area of land, smaller than a mountain
4
Chain or group of islands
5
Total number of people in an area
7
Ocean between Americas and Europe/Africa
8
Largest hot desert in the world
13
Large body of water partly enclosed by land
纵向
2
Half of the Earth
3
Largest ocean on Earth
6
Vast body of salt water
9
Land surrounded by water on three sides
10
Where river meets the sea
11
Large slow-moving mass of ice
12
Physical features of land