横向
1
The Red Planet
4
Second lightest element
6
Mass per unit volume
7
Compound containing oxygen
纵向
2
Icy body with a tail near the sun
3
Preserved remains of ancient life
5
Natural satellite of Earth
8
Blocking of light by a celestial body
The Red Planet
Second lightest element
Mass per unit volume
Compound containing oxygen
Icy body with a tail near the sun
Preserved remains of ancient life
Natural satellite of Earth
Blocking of light by a celestial body