eye-opener
🇺🇸
/ˈaɪ əʊəpənər/
🇬🇧
/ˈaɪ əʊpənə(r)/
An experience that surprises you and makes you aware of something new or different.
Visiting the museum was an eye-opener, showing me how technology has evolved over the years.
參觀博物館真是大開眼界,讓我看到了多年來技術是如何發展的。