Travelling around India was a real eye-opener for me.

周游印度真让我开了眼界。

《牛津词典》

Learning about John's opium addiction was a real eye-opener for me.

对约翰的鸦片瘾的了解，令我很大开眼界。

youdao

Television is a real eye-opener.

电视真使人大开眼界。

《新英汉大辞典》

That was a real eye-opener, but it was still a challenge to get it across on TV.

CNN: Darfur diary: Best of a bad situation

This can be a real eye-opener.

FORBES: Protecting Yourself In A Plunging Economy: The Small Step Solution

Mr Hempleman-Adams said trekking and camping on the Brecon Beacons for the Bronze Award when he was 13 had been a "real eye-opener".

BBC: World explorer Hempleman-Adams: 'I've been lucky'