A common implementation technique is to set one initial font size, then use percentages for any other font sizes further down the stylesheet.

一种常用的实现技术是，设置一个初始字体大小，然后在样式表中对任何其他字体大小使用百分数。

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A common problem is that the use case model explodes in size very quickly, especially when you are working on the abstraction level of business requirements.

一个通常的问题是用例模型爆炸式快速增长，特别当你正在业务需求的抽象层工作的时候。

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In fact, the name itself indicates this: a common use for it is to store user-specific Settings, or preferences, such as font size or window layout. (Of course, you can store anything you want in it.)

事实上，它的名字本身就表明它通常用于存储用户特定的设置或者首选项，如字体大小或者窗口布局(当然，您可以在其中存储任何您想要存储的内容)。

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