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〈书〉用含蓄委婉的话向君主进谏。
[give advance to one's superior;remonstrate with ruler by clever analogy] 指下对上,不直指其事,而用委婉曲折的言语规劝,使其改正错误 衡乃拟 班固《两都》作《二京赋》,因以讽谏。——《后汉书·张衡传》