苦思冥想而不出，突然之間靈光閃現？這就是“電燈泡時刻”。

A light-bulb moment is when you have a sudden realization about something. It's a moment of sudden inspiration, revelation, or recognition.
“電燈泡時刻”是指你突然醒悟的那一瞬間，指的是突然靈光閃現、受到啟發，或者意識到什么的時刻。

Light-bulb moment is an event when one suddenly understands something even if the concept had been explained several times before.
有時一種概念之前已經解釋了很多遍，但突然你就理解了，這就是“電燈泡時刻”。

例句： President-Elect Obama said that there was not a light-bulb moment when he decided to name Hillary Clinton as Secretary of State.
當選總統奧巴馬說，他提名希拉里-克林頓出任國務卿，不是一時沖動，而是經過深思熟慮的。

Hey guys I just got an idea; yes I had a light bulb moment!
嗨伙計們，我剛想到了一個主意，是的這是“電燈泡時刻”！

（中國日報網英語點津 yaning）