Combining these overlays to form relationships and tracking them over time can further produce incredibly dynamic and capable applications.

通过合并各层的信息建立它们之间的关系并进行跟踪，可以生成更加动态和强大的应用程序。

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It was also the first time they had colour and they managed to do that by having coloured overlays over parts of the screen.

当时，它也是第一个带彩色的游戏，游戏设计人员是用色彩覆盖了屏幕的某些部分才达到了这个效果。

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