横向
1
Naturally occurring inorganic solid
4
Nerve cell in the brain
5
Our home planet
纵向
1
The Red Planet
2
Basic unit of life
3
Blocking of light by a celestial body
6
Smallest unit of an element
7
Unit of power
Naturally occurring inorganic solid
Nerve cell in the brain
Our home planet
The Red Planet
Basic unit of life
Blocking of light by a celestial body
Smallest unit of an element
Unit of power