横向
1
Largest ocean on Earth
5
Chain or group of islands
8
Cold treeless Arctic plain
13
Large natural elevation of earth
纵向
2
City that is seat of government
3
Half of the Earth
4
Large natural stream of water
6
Height above sea level
7
Line dividing two countries
9
Seasonal heavy rainfall
10
Area where water covers the soil
11
Goods brought in from another country
12
One of seven major landmasses