如饮醍醐

词典解释

[be comfortable as one who has swallowed the best drinks] 佛教用语。喻指以智慧灌输于人,使人思想豁然开朗(醍醐:从牛奶中提炼出来的精华,佛教喻指最高佛法)

成语解释

比喻使人思想上一下就通了。