横向
1
Low-lying land surrounded by higher ground
4
Long-term weather patterns of an area
5
Vast body of salt water
7
Large slow-moving mass of ice
8
Large natural elevation of earth
10
Chain or group of islands
12
Large natural stream of water
13
One of seven major landmasses
纵向
2
Seasonal heavy rainfall
3
Physical features of land
6
Area where water covers the soil
9
City that is seat of government
11
Goods sold to another country