电子信息专业英语Unit 7.ppt

电子信息专业英语 Unit 7 Internet,大连理工大学出版社,Contents,,Text,Internet,By the turn of the century, information, including access to the Internet, will be the basis for personal, economic, and political advancement. The popular name for the Internet is the information superhighway.,,,,因特网 在世纪之交，信息，包括接入到因特网的信息，将成为个人、经济和政治进步的基础信息高速公路是因特网广受欢迎的名字Internet  n. 互联网 superhighway n. 超级高速公路,,Company Logo,Text,Whether you want to find the latest financial news, browse through library catalogs, exchange information with colleagues, or join in a lively political debate, the Internet is the tool that will take you beyond telephones, faxes, and isolated computers to a burgeoning networked information frontier.,,,,无论你是要找最新的财经新闻、浏览图书馆目录、还是与同事交流信息，或者参加现场政治辩论，因特网是一种工具，它将带您超越、和独立的计算机到达一个新兴的网络信息前沿。

catalog n. 种类,目录 burgeoning a. 发展的,发芽的,Text,,,,,因特网替代了你所用的传统工具，它用以搜集资料、数据图表、新闻以及与其他人进行通信联系通过熟练地使用因特网，能大大缩小世界，并为你带来信息、知识以及你所能想象到的每一个主题The Internet supplements the traditional tools you use to gather information data graphics, news and correspond with other people. Used skillfully, the Internet shrinks the world and brings information, expertise, and knowledge on nearly every subject imaginable straight to your computer.,shrink v. 收缩,变小,,Company Logo,Text,,,,,什么是因特网？ 因特网链接是遍布全世界各地的计算机网络，使用户实现资源共享和相互沟通。

一些计算机，比如大学里的计算机，可直接进入因特网上的所有设施，而另一些计算机，比如私人计算机，通过商业服务供应商提供的部分或全部上网设施可间接进入因特网What is the Internet? The Internet links are computer networks all over the world so that users can share resources and communicate with each other. Some computers have direct access to all the facilities on the Internet such as the universities. And other computers, e.g. privately- owned ones, have indirect links through a commercial service provider, who offers some or all of the Internet facilities.,,Company Logo,Text,,,,,为了连接到因特网上，你必须通过服务供应商。

许多选项需要每月花钱支付才能使用根据所选择的选项的不同，访问时间可能会有所不同In order to be connected to Internet, you must go through service suppliers. Many options are offered with monthly rates. Depending on the option chosen, access time may vary.,service supplier 服务供应商,,Company Logo,Text,,,,,因特网就是我们所说的网中网，即是一个遍布全球的网络要想给出组成因特网的网络或用户的准确数字是不可能的，但很容易达到几千几百万的数量级It’s impossible to give an exact count of the number of networks or users that comprise the Internet, but it is easily in the thousands and millions respectively.1,要想给出到底有多少网络或用户组成因特网的准确数字是不可能的,但很容易达到几千几百万的数量级上｡ “it”是形式主语,真正的主语是“to give an exact count of the number of networks or users;that comprise the Internet”为限制性定语从句;“but it is easily . ”中的“it”是指“the number of networks or users”｡,The Internet is what we call a metanetwork, that is, a network of networks that spans the globe.,metanetwork  n. 网中网,,Company Logo,Text,,,,,在因特网上采用了一套标准化协议，允许在因特网上不同类型的计算机进行相互通信时可以共享资源。

这些标准，有时被视为互联网协议套件，是开发商为因特网创建新功能时所遵循的准则The Internet employs a set of standardized protocols which allow for the sharing of resources among different kinds of computers that communicate with each other on the network.,These standards, sometimes referred to as the Internet Protocol Suite, are the rules that developers adhere to when creating new functions for the Internet.2,这些标准,有时被视为因特网协议套件,是开发商为因特网创建新功能时所遵循的准则｡ “sometimes referred to as the Internet Protocol Suite”为插入语,“refer to as”被视为;“that developers adhere to when creating new functions for the Internet”为定语从句,修饰“rules,adhere to” 作“遵守,遵循”解｡,standardize v. 使标准化 protocol  n. 协议 communicate v. 通信,交流 Internet Protocol Suite Internet协议组[IPS](指导分组信息如何通过Internet 传送和作为信息被解释的规则组群),,Company Logo,Text,,,,,在因特网上，不存在中央档案馆，因此也被称之为分布式系统。

在技术上，没有人管理因特网，相反，因特网是由数以千计的小型网络组成因特网的壮大和发展，得益于许多用户找到新的方法来创造、显示和检索信息，从而为因特网的发展作出了贡献The Internet is also what we call a distributed system, there are no central archives. Technically, no one runs the Internet. Rather, the Internet is made up of thousands of smaller networks. The Internet thrives and develops as its many users find new ways to create, display and retrieve the information that constitutes the Internet.,archive  n. 档案存储器 retrieve v. 检索,,Company Logo,Text,,,,,因特网的历史和发展 在其发展初期，因特网由国防部设计，其目的是在发生军事打击时来保障政府的通信系统。

最初的网络，ARPANet（高级研究计划局开发），逐渐演变成在承建商、军事人员以及为ARPA项目作出贡献的大学研究人员之间的一种通信信道History & Development of the Internet The original network, ARPANet (for the Advanced Research Projects Agency that developed it) evolved into a communications channel among contractors, military personnel, and university researchers who were contributing to ARPA projects.,In its infancy, the Internet was originally conceived by the Department of Defense as a way to protect government communications systems in the event of a military strike.3,在其发展初期,因特网最初由国防部设计,做为一种在发生军事打击时来保护政府的通信系统的一种方法｡ infancy:婴儿,这里引申为发展初期;Department of Defense:可缩写为DoD,特指美国国防部;as a way 作为一种……的方式｡,ARPANet n. Advanced Research Projects Agency Network 美国国防部高级研究计划网络 contractor n. 承包人,订约人,,Company Logo,Text,,,,,该网。