横向
1
The Red Planet
3
Force that attracts objects together
5
Preserved remains of ancient life
7
Path of a planet around the sun
纵向
2
Our home planet
4
Amplified beam of light
5
Push or pull on an object
6
Substance with pH below 7
The Red Planet
Force that attracts objects together
Preserved remains of ancient life
Path of a planet around the sun
Our home planet
Amplified beam of light
Push or pull on an object
Substance with pH below 7