横向
1
Basic unit of life
3
The Red Planet
4
Smallest unit of an element
5
Second lightest element
6
Blocking of light by a celestial body
纵向
1
Solid with repeating atomic pattern
2
Substance with pH above 7
5
Form of thermal energy
7
Naturally occurring inorganic solid
8
Preserved remains of ancient life
9
Unit of energy