《第四公民》将能高度还原“棱镜门”事件始末，为观众真实揭秘身处漩涡中心的爱德华·斯诺登。
纪录片导演柏翠丝本人也是“棱镜门”事件的核心人物，正是在她和《卫报》记者格仑·格林沃德的协助下，斯诺登才得以将美国国家安全局的监控丑闻公之于众。而柏翠丝与格林沃德也因此荣获普利策奖。片名“第四公民”（citizen four）正是斯诺登早期与柏翠丝邮件沟通时使用的匿名代号。2013年6月，当柏翠丝第一次飞往香港与斯诺登见面的时候，她随身携带的摄像机也真实记录了当时的场景。《第四公民》将能高度还原“棱镜门”事件始末，为观众真实揭秘身处漩涡中心的爱德华·斯诺登。

dward Snowden, the man who risked everything to expose the US government’s system of mass surveillance, reveals for the first time the story of his life, including how he helped to build that system and what motivated him to try to bring it down.
In 2013, twenty-nine-year-old Edward Snowden shocked the world when he broke with the American intelligence establishment and revealed that the United States government was secretly pursuing the means to collect every single phone call, text message, and email. The result would be an unprecedented system of mass surveillance with the ability to pry into the private lives of every person on earth. Six years later, Snowden reveals for the very first time how he helped to build this system and why he was moved to expose it.
Spanning the bucolic Beltway suburbs of his childhood and the clandestine CIA and NSA postings of his adulthood, Permanent Record is the extraordinary account of a bright young man who grew up online—a man who became a spy, a whistleblower, and, in exile, the Internet’s conscience. Written with wit, grace, passion, and an unflinching candor, Permanent Record is a crucial memoir of our digital age and destined to be a classic.

该片披露了美国“棱镜”项目曝光者斯诺登从香港前往莫斯科的诸多细节，包括他在香港与卫报记者会面的过程。 纪录片导演介绍，该片披露了美国“棱镜”项目曝光者斯诺登从香港前往莫斯科的诸多细节，包括他在香港与卫报记者会面的过程。 当时，他们接头的暗号之一，是斯诺登手里的魔方。纪录片通过情景再现的方式向观众介绍了许多不为人知的细节，曾为斯诺登提供过帮助的关键人物首次详细披露整个过程。影片内的受访对象包括美国前国家安全局局长迈克尔海登，维基解密创始人朱利安·阿桑奇等，也包括斯诺登的父亲。

《永久记忆新英语900句:进阶表达》内容简介：《基础语句》包括人们在一般交往过程中的表达需求、对周围事物的态度等，例如：问候、介绍、征求意见和喜恶爱憎等；《进阶表达》则引导人们走进具体生活场景，更加突出语言的工具作用，例如在商场、电影院、饭店、校园等。整套书由浅人深、循序渐进，结构如下。
全套书共有120课，每课展现一个场景，同时包含语言的一方面的功能。
第一部分是15个基本句型，集中体现了在具体场景中必备和流行的句子。人们往往有这样的学习外语的经验：有强烈的表达欲望，却一时词穷意尽，无法开口。熟记这些句子，它们会成为你在具体情景中表达的开口先锋。