(名詞) 服用某些藥物後在隔天所產生的全身無力、無精打采、昏昏沈沈的現象。hangover 意為「宿醉」。
引句：
Those medications can induce next-day grogginess—what some patients call “sleep hangovers.”
—Lindsay Lyon, "10 ways to get better sleep (and maybe cure your insomnia)," US News & World Report, March 3, 2009
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