横向
1
Fourth state of matter
3
Nerve cell in the brain
6
Our home planet
8
Infectious microscopic agent
纵向
2
Second lightest element
4
Measure of matter in an object
5
Ball of burning gas in space
7
Naturally occurring inorganic solid
Fourth state of matter
Nerve cell in the brain
Our home planet
Infectious microscopic agent
Second lightest element
Measure of matter in an object
Ball of burning gas in space
Naturally occurring inorganic solid