横向
1
Where river meets the sea
6
Ridge of rock or coral near the surface
7
Raised area of land, smaller than a mountain
8
Mountain that can erupt with lava
9
Land surrounded by water
10
Region between the two tropic lines
12
Total number of people in an area
纵向
2
Flat grassland in tropical regions
3
Large natural stream of water
4
One of seven major landmasses
5
Body of water surrounded by land
11
Large area covered with trees