用英文介绍一下变形金刚里的博派和狂派

Autobots --- The benevolent Autobots,led by heroic Optimus Primeic.Their homeland - Cybertron,it was destroyed by the malevolent Decepticon,and the Autobots want to find the All Spark so they can use it to rebuild Cybertron and end the war between the Autobots and the Decepticons.
Decepticon --- The malevolent leader Megatron,they have destored the Cybertron,and moved to the earth in his quest to get hold of the All Spark.The Decepticons want to use it to obliterate the Autobots and take over the universe.