横向
1
Molten rock beneath Earth surface
4
Biological catalyst
6
Preserved remains of ancient life
7
Positive particle in nucleus
纵向
2
Amplified beam of light
3
Icy body with a tail near the sun
5
Gas essential for breathing
7
Fourth state of matter
Molten rock beneath Earth surface
Biological catalyst
Preserved remains of ancient life
Positive particle in nucleus
Amplified beam of light
Icy body with a tail near the sun
Gas essential for breathing
Fourth state of matter