Unit 27

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The inventions of communication tools made the connection of our world possible

通信工具的发明让世界互联成为可能。

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In the past , people had to communicate face to face

过去，人们必须面对面交流。

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It was common that they travelled a long way to meet each other

他们长途跋涉只为相见，这在当时是常有的事。

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A hundred years ago , the telephone and fax were invented to make our communication more efficient

一百年前，电话和传真机的发明让我们的沟通变得更加高效。

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People could ring up friends through telephone , and send messages through fax

人们可以通过电话与朋友通话，并通过传真发送消息。

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At that time , some operators were in charge of dialing telephone numbers

当时，一些接线员负责拨打电话号码。

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After the person on the other side answered the phone , they would transfer the line to the person who dialed

对方接听电话后，会将电话转接给拨打电话的人。

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Because telephone lines were limited , when the lines were engaged , they had to wait for a long time , which was time-consuming

由于电话线路有限，当线路被占用时，他们不得不等待很长时间，这非常耗时。

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The invention of the smartphone solved this problem well

智能手机的发明很好地解决了这个问题。

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People carried smartphones everywhere , and they could call and reply at once

人们随身携带智能手机，可以随时接打电话并立即回复。

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Gradually , people realised that visual chatting could convey more information than vocal chatting , but the electronic devices at that time couldn't enable people to get access to see each other

渐渐地，人们意识到视频聊天比语音聊天能传递更多信息，但当时的电子设备还无法实现彼此见面的功能。

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Video calls that use webcams were invented later

使用网络摄像头进行视频通话的技术是后来才发明的。

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The computer is another great invention for humans

计算机是人类另一项伟大的发明。

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At first , the computer was of large volume and slow , which was used as a calculator

起初，计算机体积庞大且运行缓慢，被用作计算器。

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With the hardware and server updated , the computer became smaller and faster

随着硬件和服务器的更新，电脑变得更小更快了。

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Nowadays , when switching on this tiny machine , we are able to connect with the large world

如今，只要打开这台小小的机器，我们就能与广阔的世界相连。

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We can install software to make a computer have multiple functions

我们可以安装软件来使计算机具备多种功能。

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For example , we can not only surf website home pages by search engines but also chat with relatives or friends far away through social software

例如，我们不仅可以通过搜索引擎浏览网站主页，还能借助社交软件与远方的亲友聊天。

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Fax gradually disappears from our sight , because data can be sent through the computer easily

传真逐渐从我们的视野中消失，因为通过电脑可以轻松传输数据。

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Social media is developing rapidly

社交媒体正在快速发展。

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Take blogs as an example

以博客为例。

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Bloggers upload video clips to mark their world through the Internet

博主们上传视频片段，通过网络记录他们的世界。

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Advanced technology has both advantages and disadvantages

先进技术既有利也有弊。

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It brings convenience and efficiency to us , but it also disturbs our pace and speeds our world up

它为我们带来了便利与效率，却也打乱了我们的节奏，加速了世界的运转。

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The key is whether we can make good use of technology

关键在于我们能否善用技术。