He was about to shut the door when an idea came to him.

他正准备关门时，突然想起了一个主意。

《柯林斯英汉双解大词典》

He had an idea: He wanted to make a new kind of headphone.

他有了一个想法：他想制造一种新型耳机。

youdao

He suddenly popped up an idea.

他突然想到了一个主意。

youdao

He had an idea for a tool that would help television actors read their lines without having to memorize them.

VOA: special.2011.05.11

Wallace Stevens It's an idea that actually is rather splendidly set down by Wallace Stevens. And in fact, he set it down initially during a lecture he gave in Princeton, which is subsequently published as an essay.

这其实是,首先详细提出来的，事实上，他首先是在普林斯顿大学,的演讲中提出这点，随后以论文的方式出版。

普林斯顿公开课 - 人性课程节选

He also had the idea that he would make it narrow enough so that when you're boarding an airplane you can still roll it down the aisle of the airplane-- it just fit perfectly.

他还想到要将把手弄的窄一点,以便登机进通道的时候,还能拖着箱子走-,这非常符合当时的需要。

耶鲁公开课 - 金融市场课程节选

Once he had an idea in his head he pushed it to its logical conclusion and if he was proved wrong he simply shifted to another idea, which he pursued with equal certainty.

ECONOMIST: The unacknowledged giant

To explain this, he invokes an idea that went out of fashion in the 1960s: group selection.

ECONOMIST: Human evolution: Moral thinking | The

Verlander said he had an idea coming in for his first inning that it might not be his day.

WSJ: Niese outpitches Verlander in Mets' win