Each p: : RD grammar becomes an object blessed into the p: : RD class, with each rule in the grammar as a method you can use to cause actions to happen.

每个P： RD语法成为P： rd类中的一个对象，语法中的每一个规则都可以作为用来执行动作的方法。

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Lucky object and concomitant, symbolizing riches and flowers bloom, the exhibition will flower, also blessed with colorful colors xian future will be more beautiful.

吉祥物体与富贵花相伴，象征着本次展会将如花绽放，五彩纷呈，也祝福着西安的未来将更加美好。

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