英语词汇dog days的起源、历史背景-英语词源词典

dog days. Mad dogs don’t give us this name for the hot, close days of July and August, though perhaps the prevalence of mad dogs at that time of year has kept the phrase dog days alive. The expression originated in Roman times as canicularis dies, “days of the dog,” and was an astronomical expression referring to the dog star Sirius, or possibly Procyon. The Romans linked the rising of the Dog Star, the most brilliant star in the constella- tion, Canis Major, with the sultry summer heat, believing that the star added to the extreme heat of the sun. “Canicular days,” of course, have nothing to do with heat from the Dog Star, but the ancient expression remains popular after more than 20 centuries.

词汇	dog days
词源	dog days. Mad dogs don’t give us this name for the hot, close days of July and August, though perhaps the prevalence of mad dogs at that time of year has kept the phrase dog days alive. The expression originated in Roman times as canicularis dies, “days of the dog,” and was an astronomical expression referring to the dog star Sirius, or possibly Procyon. The Romans linked the rising of the Dog Star, the most brilliant star in the constella- tion, Canis Major, with the sultry summer heat, believing that the star added to the extreme heat of the sun. “Canicular days,” of course, have nothing to do with heat from the Dog Star, but the ancient expression remains popular after more than 20 centuries.
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