横向
1
Unit of energy
4
Tissue that contracts for movement
6
Gas essential for breathing
8
Unit of force
纵向
2
Nerve cell in the brain
3
Push or pull on an object
5
Ball of burning gas in space
7
Center of an atom or cell
Unit of energy
Tissue that contracts for movement
Gas essential for breathing
Unit of force
Nerve cell in the brain
Push or pull on an object
Ball of burning gas in space
Center of an atom or cell