横向
1
One of seven major landmasses
5
Largest river in South America
7
Large natural stream of water
9
Land surrounded by water
11
Large area covered with trees
12
Raised area of land, smaller than a mountain
13
Cold treeless Arctic plain
纵向
2
Landform where river meets the sea
3
Seasonal heavy rainfall
4
Ridge of rock or coral near the surface
6
Ocean between Americas and Europe/Africa
8
Region between the two tropic lines
10
Flat elevated area of land