横向
1
Force that attracts objects together
3
Preserved remains of ancient life
4
Nerve cell in the brain
6
Substance with pH above 7
7
Particle of light
纵向
2
Group of similar cells
5
Gas essential for breathing
8
Icy body with a tail near the sun
Force that attracts objects together
Preserved remains of ancient life
Nerve cell in the brain
Substance with pH above 7
Particle of light
Group of similar cells
Gas essential for breathing
Icy body with a tail near the sun