横向
1
Solid with repeating atomic pattern
4
Icy body with a tail near the sun
6
Positive particle in nucleus
8
Second lightest element
纵向
2
Smallest unit of an element
3
Nerve cell in the brain
5
Tectonic landmass section
7
The Red Planet
Solid with repeating atomic pattern
Icy body with a tail near the sun
Positive particle in nucleus
Second lightest element
Smallest unit of an element
Nerve cell in the brain
Tectonic landmass section
The Red Planet