搭配 “eye-opener” 是由單字 “eye 眼睛” 和 “opener 開…的東西” 構成的合成詞。它用來指一件事非常有趣，有教育性、啟發性或引人深省，讓人驚訝得目瞪口呆、大開眼界。
He didn’t think he would be interested in fish, but Rob found the trip to the aquarium a real eye-opener. He was particularly fascinated by the huge octopus!
That meeting with the finance team was an eye-opener, wasn’t it? I had no idea the company was doing so badly!
I had coffee with my colleague, Elizabeth, yesterday and our conversation was a complete eye-opener. She and her husband are getting a divorce, but she’s always smiling and happy when she’s at work. I had no idea.