横向
1
Ball of burning gas in space
2
Natural satellite of Earth
3
Nerve cell in the brain
5
Substance with pH below 7
7
Basic unit of life
纵向
2
Tissue that contracts for movement
4
Naturally occurring inorganic solid
6
Infectious microscopic agent
Ball of burning gas in space
Natural satellite of Earth
Nerve cell in the brain
Substance with pH below 7
Basic unit of life
Tissue that contracts for movement
Naturally occurring inorganic solid
Infectious microscopic agent