横向
1
Landform where river meets the sea
4
Largest ocean on Earth
5
Flat elevated area of land
6
Low-lying land surrounded by higher ground
8
Imaginary line around the middle of Earth
14
Height above sea level
15
Vast body of salt water
纵向
2
Wearing away of land by water or wind
3
Visual representation of an area
7
Region between the two tropic lines
9
Area where water covers the soil
10
Cold treeless Arctic plain
11
Land surrounded by water on three sides
12
Piece of land jutting into the sea
13
Long-term weather patterns of an area