Theodore Twombly (Phoenix) has built his career on expressing the emotions that others cannot. His job is to pen heartfelt, deeply personal letters to complete strangers based on details provided by the clients of the company he works for, and he has a knack for finding just the right words for every occasion. Meanwhile, reluctant to sign the papers that will finalize his divorce to his childhood sweetheart, depressed Theodore has slowly withdrawn from his supportive social circle, which includes his longtime friend Amy (Amy Adams), herself floundering in a failed marriage. When Theodore purchases a new state-of-the-art computer operating system with the ability to learn and grow with the user, he sits down at his desk and prepares to get his life in order. Adopting the name Samantha (Scarlett Johansson), the perceptive software slowly begins to bring Theodore out of his shell by encouraging him to start dating again, and joining him everywhere he goes. Very quickly, their relationship turns intimate, with Theodore teaching Samantha what it means to feel human and Samantha giving him the strength to walk away from his failed marriage. Things soon get complicated, however, when Samantha’s rapidly evolving knowledge base begins to alter the very core of their relationship..
参考翻译：
Theodore Twombly（凤凰城）的职业生涯建立在表达他人无法表达的情感上。他的工作是根据他工作的公司客户提供的细节，给完全陌生的人写一封由衷的、非常私人的信，而且他有在任何场合都能找到合适的词语的诀窍。与此同时，沮丧的西奥多不愿签署与童年恋人的离婚协议，因此慢慢退出了支持他的社交圈，其中包括他的老朋友艾米（艾米·亚当斯饰），她自己也在失败的婚姻中挣扎。当西奥多购买了一个新的最先进的计算机操作系统，能够与用户一起学习和成长时，他坐在办公桌前，准备让自己的生活井然有序。这个名为萨曼莎（斯嘉丽·约翰逊饰）的感知软件通过鼓励西奥多再次开始约会，并在他所到之处加入他，慢慢地开始让西奥多走出困境。很快，他们的关系变得亲密起来，西奥多教萨曼莎什么是人的感觉，萨曼莎给了他摆脱失败婚姻的力量。然而，当萨曼莎快速发展的知识基础开始改变他们关系的核心时，事情很快变得复杂起来。。
重点词汇释义：
based on以……为基础；在……基础上，以……为依据
provided by【法】由…规定
which includes其包括
longtime friend旧交，交往很长时间的朋友
operating system操作系统
