横向
1
Region between the two tropic lines
5
Visual representation of an area
7
Flat grassland in tropical regions
8
Imaginary line around the middle of Earth
9
Largest ocean on Earth
10
Wearing away of land by water or wind
11
Region surrounding the North Pole
12
Deep narrow valley with steep sides
14
Low area between mountains
纵向
2
Landform where river meets the sea
3
Long-term weather patterns of an area
4
Half of the Earth
6
One of seven major landmasses
13
Large body of water partly enclosed by land