横向
1
Large natural elevation of earth
5
Long-term weather patterns of an area
7
Wearing away of land by water or wind
8
One of seven major landmasses
10
Raised area of land, smaller than a mountain
11
Cold treeless Arctic plain
纵向
2
Line dividing two countries
3
Ocean between Americas and Europe/Africa
4
Distance east or west of prime meridian
6
Chain or group of islands
9
Flat grassland in tropical regions
12
Goods sold to another country