横向
1
Our home planet
4
Precious yellow metallic element
5
Path of a planet around the sun
8
Amplified beam of light
9
Chemical element in table salt
纵向
2
Form of thermal energy
3
Mass per unit volume
6
Smallest unit of an element
7
The Red Planet
Our home planet
Precious yellow metallic element
Path of a planet around the sun
Amplified beam of light
Chemical element in table salt
Form of thermal energy
Mass per unit volume
Smallest unit of an element
The Red Planet