横向
1
Molten rock beneath Earth surface
3
Nerve cell in the brain
5
Mass per unit volume
6
Icy body with a tail near the sun
纵向
1
Tissue that contracts for movement
2
Our home planet
4
Compound containing oxygen
7
Gas essential for breathing
Molten rock beneath Earth surface
Nerve cell in the brain
Mass per unit volume
Icy body with a tail near the sun
Tissue that contracts for movement
Our home planet
Compound containing oxygen
Gas essential for breathing