在前几期的精通grails系列文章中，JSON和Ajax都扮演支援者的角色，而这一次，它们担任主角。

After playing supporting roles in previous Mastering Grails articles, this time they take center stage.

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他最终获得了一份演出的工作，可不是担任一般的角色，而是新影片的主角。

He had an acting job at last, and not just any part, but the lead in a new film.

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她成功的表演让所有观众惊叹不已。他们想要知道，为什么过去分派给克里斯汀的都只是一些小角色。“像这样一个才华横溢的歌手理应担任主角的，”他们认为。

Her success surprised the audience. They wanted to know why she had only been given small parts. "Such a talented singer should deserve the lead role, " they thought.

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