横向
1
Low area between mountains
3
One of seven major landmasses
4
Seasonal heavy rainfall
5
Area where water covers the soil
6
Tool for finding directions
纵向
2
Land surrounded by water
3
Deep narrow valley with steep sides
7
Mountain that can erupt with lava
8
Distance east or west of prime meridian
9
Large body of water partly enclosed by land
10
Goods sold to another country
11
Where river meets the sea
12
Region surrounding the North Pole
13
Vast body of salt water