mystery play
US /ˈmɪs.tər.i ˌpleɪ/
UK /ˈmɪs.tər.i ˌpleɪ/

1.
神秘剧, 宗教剧
a medieval drama based on biblical stories, especially the life of Christ or the saints, performed in churches or on movable stages
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The town's annual festival includes a traditional mystery play.
该镇的年度节日包括一场传统的神秘剧。
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Scholars study mystery plays to understand medieval religious theater.
学者们研究神秘剧以了解中世纪的宗教戏剧。