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原指一部合乎道德规范的经典。后用以形容态度庄重严肃，郑重其事。有时含讽刺意味。
[with a show of seriousness;look as if butter would not melt one's month] 显出很规矩、很庄重的举止或外表。有时含讽刺的意味
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