横向
1
Force that attracts objects together
2
Push or pull on an object
5
Center of an atom or cell
8
Blocking of light by a celestial body
9
Particle of light
纵向
1
Unit of heredity
3
The Red Planet
4
Positive particle in nucleus
6
Naturally occurring inorganic solid
7
Chemical element in table salt
10
Infectious microscopic agent