横向
1
Half of the Earth
6
Seasonal heavy rainfall
7
Flat grassland in tropical regions
13
Goods sold to another country
纵向
2
Imaginary line around the middle of Earth
3
Steep rock face at edge of land
4
Vast body of salt water
5
Piece of land jutting into the sea
8
Dry land with little rainfall
9
Large area covered with trees
10
Mountain that can erupt with lava
11
Cold treeless Arctic plain
12
Deep narrow valley with steep sides