横向
1
Unit of energy
4
Path of a planet around the sun
6
Push or pull on an object
7
Force that attracts objects together
纵向
2
Group of similar cells
3
Gas essential for breathing
5
Reddish electrical conductor
8
Precious yellow metallic element
Unit of energy
Path of a planet around the sun
Push or pull on an object
Force that attracts objects together
Group of similar cells
Gas essential for breathing
Reddish electrical conductor
Precious yellow metallic element