横向
1
Compound containing oxygen
5
Basic unit of life
7
Gas essential for breathing
纵向
2
Push or pull on an object
3
Center of an atom or cell
4
Infectious microscopic agent
6
Second lightest element
8
Unit of force
Compound containing oxygen
Basic unit of life
Gas essential for breathing
Push or pull on an object
Center of an atom or cell
Infectious microscopic agent
Second lightest element
Unit of force