横向
1
Preserved remains of ancient life
4
Natural satellite of Earth
6
Mass per unit volume
8
Amplified beam of light
纵向
2
Second lightest element
3
Substance with pH above 7
5
Unit of electric potential
7
Curved glass that refracts light
Preserved remains of ancient life
Natural satellite of Earth
Mass per unit volume
Amplified beam of light
Second lightest element
Substance with pH above 7
Unit of electric potential
Curved glass that refracts light