Before looking at the code, let us introduce our basic scenario, in which we, as an example, are a survey center, specializing in public tastes of favorite books, movies, songs, and sites.

在查看代码之前，我们先介绍基础的场景，我们在该场景中扮演一个调查中心，负责研究公众喜欢的图书、电影、歌曲和站点的品味。

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In the summer of 2008, Steve Jobs appeared on stage at Apple's Worldwide Developers Conference in San Francisco's Moscone Center to introduce the latest version of the iPhone.

在2008年的夏天，史蒂夫·乔布斯在位于旧金山Moscone中心召开的苹果全球开发者大会上露面，向大家介绍了最新版本的iPhone。

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You might want to check the effectiveness of your own organization's ability to manage the potential chaos virtualization can introduce into your data center.

在把虚拟化引进你的数据中心而导致潜在的混乱后，你也许也想检查一下自己组织的能力有多有效。

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But the masterpieces at the center of the exhibitions introduce visitors to the lost world of the flamboyant, nomadic warriors known as the Scythians.

FORBES: Travel

With all of that in mind, NASCAR could not have picked a better time to introduce its Fan and Media Engagement Center.

FORBES: NASCAR And Hewlett-Packard Are Driving Innovation With New Fan And Media Engagement Center

If they accept being in the same cage together, the center and environmentalists will begin a process of trying to introduce them into the Amazon jungle with a monkey group.

NPR: Monkey-Mothering 24-Hour Chore For Colombian Woman