重点讲解：
1. begin by
从…开始；从…着手；首先做（某事）；
eg. I think I should begin by introducing myself.
我想我应该先作一下自我介绍。
eg. Let's begin by reviewing the last lesson.
我们开始，先温习上一课。
2. go back to
回到（过去）；回顾；
eg. Lets go back to 2010 October.
让我们回到2010年10月份。
eg. Let me, therefore, go back to my past and say some words about my intellectual journey, although I do not like to speak about myself.
因此，请允许我在此回亿一下我的过去，讲述一些有关我的学智之旅，虽然我不喜欢谈论我自己。
3. go through
经历，经受；
eg. South Africa was going through a period of irreversible change.
南非正在经历一场不可逆转的变革。
eg. We all go through difficult times.
我们都经历过困难时期。
4. be about to do sth.
即将（做…）的；快要（发生…）的；
eg. A new book is about to be brought out.
一本新书即将出版。
eg. Charlton are about to play an important away match.
查尔顿队即将在客场进行一场重要比赛。
5. allow sb. to do sth.
允许；容许；准许；
eg. Live events allow enthusiasts to meet in person and showcase their skills.
现场活动给了那些狂热爱好者面对面展示技能的机会。
eg. Warehouse clubs allow members to buy goods at wholesale prices.
仓储式会员店允许会员以批发价购买商品。
6. thank sb. for sth./doing sth.
向…表示谢意；感谢；
eg. We would like to thank them for their patience and understanding.
我们要感谢他们的耐心和理解。
eg. Thank you very much for listening.
非常感谢大家听我讲话。

背景资料：
谷歌全球开发技术推广大会Google I/O（意为Innovation in the Open——在开放中创新）是谷歌公司每年都会举行一次的技术分享盛会。本篇演讲是维克·冈多特拉在第四次，即2011年Google I/O上的开幕词，其中回顾了谷歌四年来取得的成就，包括前几届大会的主题以及本次大会的与从不同。

名人经典：
The connectivity was about to explode both in its availability as well as its bandwidth, and that would allow us to build cloud-based services that we could hardly have dreamed of a few years ago.
无论就可应用性还是就网络带宽而言，我们都将进入网络爆炸时代。这些也使得我们可以建立基于云计算的服务，而这一切都是几年前我们根本没法想象的。