您可以将一个组件添加到另一个组件上，而无需将其添加到屏幕上的固定矩形区域。

Instead of adding a component to a fixed rectangle on the screen, you can add it on top of another component.

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因此，位图虽然能够生成不错的图像，但它最多只能满足在静态且屏幕分辨率固定这一特定条件下的某些需求。

Therefore, bitmaps, though capable of generating fantastic images, at best serve a particular domain of interest, where things are static and screen resolutions are fixed.

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文字已经不限于用笔墨书写的固定字块，而可以成为在玻璃屏幕上快速闪烁、多姿多彩的活动文字。

Letters are no longer fixed in black ink on paper, but flitter on a glass surface in a rainbow of colors as fast as our eyes can blink.

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