横向
1
Large area covered with trees
5
Distance east or west of prime meridian
6
Dry land with little rainfall
7
Goods sold to another country
8
Goods brought in from another country
9
Mountain that can erupt with lava
12
Region surrounding the North Pole
纵向
2
Wearing away of land by water or wind
3
Total number of people in an area
4
Distance north or south of equator
10
One of seven major landmasses
11
Large slow-moving mass of ice