横向
1
Deep narrow valley with steep sides
4
Where river meets the sea
5
Physical features of land
7
Large natural stream of water
8
Imaginary line around the middle of Earth
11
Raised area of land, smaller than a mountain
纵向
2
Large area covered with trees
3
Wearing away of land by water or wind
6
Vast body of salt water
9
Goods brought in from another country
10
Large slow-moving mass of ice
12
Chain or group of islands