You should use this kind of object when you need a convenient and efficient way to retrieve data associated with an arbitrary key.

如果您需要方便快捷的方式来检索与任意密钥相关的数据，那么您应该使用此种类型的对象。

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These tasks can be performed after recording the test as well but it is often more convenient and efficient to perform them while recording.

这些任务可以在记录测试完成之后执行，然而通常一边记录一边执行会更加方便和有效。

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If you have no intent of mainlining your system calls into the public Linux kernel, then system calls are a convenient and efficient way to make kernel services available to user-space.

如果您无意将自己的系统调用加入公共的Linux内核中，那么系统调用就是将内核服务提供给用户空间的一种方便而且有效的方法。

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So, artists are using the Internet to connect to other artists in increasingly convenient and efficient ways.

FORBES: Behind The Music

"As merchants, no one understands our customers' shopping and payment experience better than we do, and we're confident that together we can develop a technology solution that makes that experience more engaging, convenient and efficient, " said Mark Williams, president of financial services, Best Buy.

ENGADGET: Best Buy, Walmart, Target, more join forces for MCX mobile payment, deals provider

Users expect results to be fast and efficient, and interface design to be intuitive and convenient.

FORBES: The New Art And Science Of Great Customer Experience