横向
1
Gas essential for breathing
4
The Red Planet
6
Smallest unit of an element
8
Icy body with a tail near the sun
纵向
2
Positive particle in nucleus
3
Amplified beam of light
5
Glass that splits light into spectrum
7
Form of thermal energy
Gas essential for breathing
The Red Planet
Smallest unit of an element
Icy body with a tail near the sun
Positive particle in nucleus
Amplified beam of light
Glass that splits light into spectrum
Form of thermal energy