After graduation, she had an idea.

毕业后，她萌生了一个想法。

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Then she had an idea.

后来她有了一个主意。

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And then she had an idea.

之后她想到了一个办法。

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Katie Koczynski - a former U.S.skeleton competitor - said Friday that she had an idea that Demong might pop the question, but when it happened she was really surprised.

VOA: standard.2010.02.27

She had an idea for radio-controlled torpedo delivery that could not be foiled by the enemy.

WSJ: Book Review: Hedy's Folly

Last winter she had an idea for a new business -- delivering handmade cakes and pastries, on just three hours' notice, anywhere in New York City, seven days a week, 24 hours a day.

FORBES: Let them eat cake . . .please!

She was pale and thin, hair pinned back, and I had an idea that she wanted to look neutral, seem neutral in order to challenge people to notice her.

NEWYORKER: Midnight in Dostoevsky