横向
1
Our home planet
3
The Red Planet
4
Ball of burning gas in space
6
Biological catalyst
纵向
2
Positive particle in nucleus
3
Naturally occurring inorganic solid
5
Force that attracts objects together
7
Solid with repeating atomic pattern
Our home planet
The Red Planet
Ball of burning gas in space
Biological catalyst
Positive particle in nucleus
Naturally occurring inorganic solid
Force that attracts objects together
Solid with repeating atomic pattern