横向
1
Region between the two tropic lines
3
Body of water surrounded by land
7
Half of the Earth
8
Landform where river meets the sea
9
Total number of people in an area
10
Where river meets the sea
11
Wearing away of land by water or wind
12
Long-term weather patterns of an area
13
Flat grassland in tropical regions
纵向
2
Large natural stream of water
4
Large natural elevation of earth
5
Deep narrow valley with steep sides
6
Largest hot desert in the world
14
Distance north or south of equator
15
Land surrounded by water on three sides