A very practical feature of sort is its ability to sort using field keys.

sort的一个非常实用的特性是它用字段键进行排序的能力。

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The following sample is intended to demonstrate this feature in a practical case.

下面的示例用于通过一个实际案例演示该特性。

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Community Connections, a monthly feature in our e-Speaks newsletter, offers families and the community the opportunity to share practical tips about meeting everyday challenges.

《社区联络》是关于我们电子讲话简报的每月专题，它为各个家庭和社区提供机会，来分享应对日常困难的实用技巧。

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Knowledge about basic maintenance of a car will now be a feature of the practical test set by the Driving Standards Agency.

BBC: L-plate

This kind of feature is more whimsical than practical.

FORBES: What The Smart Forstars Concept Car Says About The Company That Created It

But unless you actually are a bird, the feature won't be of much practical use for navigation.

CNN: 5 big changes in iOS 6