Определение a bolt from the blue в Английский Язык Английский Язык словарь
unexpected and shocking surprise or event (e.g.: "She had been working in the company for twenty years, so when she quit it must have felt like a bolt from the blue")
unexpected and shocking surprise or event (e.g.: "She had been working in the company for twenty years, so when she quit, it must have felt like a bolt from the blue")