横向
1
Area where water covers the soil
4
One of seven major landmasses
5
Piece of land jutting into the sea
7
Largest hot desert in the world
8
Flat elevated area of land
12
Goods sold to another country
纵向
2
Largest river in South America
3
Low area between mountains
5
Deep narrow valley with steep sides
6
Region near the equator
9
Large area covered with trees
10
Large body of water partly enclosed by land
11
Flat grassland in tropical regions