the scales fall from someone's eyes
US /ðə skeɪlz fɔːl frəm ˈsʌm.wʌnz aɪz/
UK /ðə skeɪlz fɔːl frəm ˈsʌm.wʌnz aɪz/

1.
茅塞頓開, 恍然大悟
if the scales fall from someone's eyes, they suddenly understand the truth about a situation, especially when they have been deceived or mistaken before
:
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After years of believing his lies, the scales fell from her eyes when she saw the evidence.
多年來一直相信他的謊言,當她看到證據時,她茅塞頓開。
•
It wasn't until I traveled abroad that the scales fell from my eyes about my own culture.
直到我出國旅行,我才對自己的文化茅塞頓開。