横向
1
Reddish electrical conductor
3
Preserved remains of ancient life
4
Natural satellite of Earth
8
Precious yellow metallic element
9
Positive particle in nucleus
10
Naturally occurring inorganic solid
11
The Red Planet
12
Solid with repeating atomic pattern
纵向
2
Chemical element in table salt
5
Icy body with a tail near the sun
6
Center of an atom or cell
7
Unit of force