By providing standard envelopes and boxes to customers and requiring consistent information on the shipping label, these companies were able to build sophisticated tracking systems.

通过为顾客提供标准化的信封和信盒以及要求标签上标有一致的信息，这些公司建立起一套可靠的跟踪系统。

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It had spent several years making private-label phones that sported the names of wireless carriers, mobile operating systems and others.

它花了几年的时间来制造自己品牌的手机，它们被称为无线收发器，手机操作系统等。

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Create a label when you create a file system, like the root, swap, or other file systems.

在创建诸如root、swap之类的文件系统或其他文件系统时，创建一个标签。

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There have been long-running battles over how to label the amount of fat, sugar, salt and calories in food - with several different systems in place.

BBC: Consultation launched on how to label food