横向
1
Landform where river meets the sea
4
Where river meets the sea
7
Large natural stream of water
10
Seasonal heavy rainfall
11
Wearing away of land by water or wind
12
Largest ocean on Earth
纵向
2
Flat grassland in tropical regions
3
Goods sold to another country
5
Physical features of land
6
Large natural elevation of earth
8
Region between the two tropic lines
9
City that is seat of government