横向
1
Large natural stream of water
3
Largest ocean on Earth
4
Steep rock face at edge of land
8
Land surrounded by water on three sides
9
Largest river in South America
13
One of seven major landmasses
纵向
2
Region surrounding the North Pole
5
Land surrounded by water
6
Imaginary line around the middle of Earth
7
Physical features of land
10
Flat grassland in tropical regions
11
Line dividing two countries
12
Vast body of salt water