英语翻译一篇影评This third installment officially makes The Butterfl

英语翻译
一篇影评
This third installment officially makes The Butterfly Effect into an official trilogy.Just like in the first and second Butterfly Effect films the main character has the ability to time travel.What starts as an extraordinary phenomenon becomes a dangerous game that alters the reality of not only the time traveler but also the timelines of those closest to him.
At the center of The Butterfly Effect 3 – Revelation is Sam (Chris Carmack).Sam uses his time travel powers to help police solve difficult crimes.By traveling back to the moment the crime takes place Sam can observe the event and return to the present with the evidence the police need to make an arrest.Being a police psychic is quite lucrative and enables Sam to make a living for him and his slightly mental sister,Jenna (Rachel Miner).
The Butterfly Effect 3 – Revelation is more a cautionary tale for eager timetravelers rather than a scary movie.The goriest scenes involve the Pontiac Killer ripping into his victims with a compact chainsaw.I did experience some slight tension whenever Sam jumped.I was kind of on the edge of my seat waiting to see if he would I.D.the killer and if he failed then I was anxious to see how reality was updated.Where would Sam land?Who would still be alive?Who would be dead?And would anyone even remember who Sam was?Kind of spinetingly.

第三部正式让《蝴蝶效应》成为了真正的三部曲.就像第一集和第二集《蝴蝶效应》电影中主人公拥有时间穿越的能力一样,一开始显得极其不同凡响的现象歪曲了现实,不仅改变了时间穿越者,更改变了离他最近的时间线.
在《蝴蝶效应3-山姆现身》的中间部分,山姆用他时间穿越的能力帮助警察解决疑难犯罪案件.通过穿越回到罪犯犯案的时间,山姆可以观察事情的始末,然后回到现在,将得到的证据交给警察来实行逮捕.当一个警察的神秘助手（原文英文这里说不通,根据全文改了一下）相当赚钱并且能够让山姆和他有轻微精神问题的妹妹,詹娜,维持生计.
《蝴蝶效应3-现身》与其说是一个惊悚电影,不如说是一个让人紧张的有关时间穿越者的故事.最血腥的场面包括杀手庞蒂克用一把小型电锯将受害者剖开.每当山姆跳的时候我都会感到轻微的紧张,坐在椅子边上等着看他是否真的会跳下去杀了那个杀手.如果山姆失败了,我就会很焦急的想知道现实是怎样的.山姆会跳到哪里呢?谁还会活着?谁会死?甚至会有人还记得山姆是谁吗?真的让人心惊胆颤.
我是美国大学在读学生,费了功夫翻译的,希望采纳!原文有很多不够通顺的地方,我都稍加做了修改.