横向
1
Chain or group of islands
5
Ridge of rock or coral near the surface
8
Large area covered with trees
9
Wearing away of land by water or wind
10
Body of water surrounded by land
11
Largest ocean on Earth
12
Low-lying land surrounded by higher ground
13
Region surrounding the North Pole
纵向
2
Area where water covers the soil
3
Land surrounded by water on three sides
4
Large body of water partly enclosed by land
6
Total number of people in an area
7
One of seven major landmasses