横向
1
Force that attracts objects together
3
Curved glass that refracts light
5
Nerve cell in the brain
6
Reddish electrical conductor
11
Hottest planet in solar system
纵向
2
Gas essential for breathing
4
Chemical element in table salt
7
Ball of burning gas in space
8
Compound containing oxygen
9
Absolute temperature scale unit
10
Our home planet