横向
1
Landform where river meets the sea
4
Seasonal heavy rainfall
7
Large area covered with trees
8
Largest ocean on Earth
9
Long-term weather patterns of an area
纵向
2
Large natural stream of water
3
Flat grassland in tropical regions
5
Distance east or west of prime meridian
6
Vast body of salt water
10
Deep narrow valley with steep sides
11
Tool for finding directions