横向
1
Imaginary line around the middle of Earth
4
One of seven major landmasses
5
Large area covered with trees
6
Seasonal heavy rainfall
10
Goods brought in from another country
12
Line dividing two countries
纵向
2
Physical features of land
3
Wearing away of land by water or wind
4
Deep narrow valley with steep sides
7
Landform where river meets the sea
8
Distance east or west of prime meridian
9
Chain or group of islands
11
Mountain that can erupt with lava