You might add classes for processing the BookPool.com navigation tree on the left side of the home page, for processing the shopping cart and checking out, or even simply for reading the source HTML.

您可能要增加一些类，处理主页左边上的 BookPool.com 的浏览树。

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Now that we have the fundamental elements out of the way, we can forge ahead and add all of the customer-facing features: navigation by category, a shopping cart, and a checkout process.

现在，我们有了一些不显眼的基础元素，我们可以向前迈进，并添加各种面向客户的特性：目录导航、购物车、以及结算过程等等。

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Today's smartphones offer amazing experiences, and consumers are increasingly relying on them for everything from navigation, entertainment and shopping to just staying connected.

ENGADGET: T-Mobile launching 'truly unlimited' 4G data service add-on September 5th (Update)

It claims to provide navigation inside buildings, stadiums, airports, shopping malls, hospitals, museums without using GPS or Wifi.

BBC: Technology that works behind closed doors

Mobile products using SiRFstarV and SiRFusion will be able to make a seamless transition between outdoor and indoor navigation as people make their way through countries, cities, neighbourhoods, parks, shopping malls, convention centres, airports, train stations or other large structures while continuing to utilise a variety of location-enabled services and applications.

ENGADGET: CSR sharpens indoor and in-car navigation with SiRFstarV, SiRFusion and SiRFprimaII