It was a lucky thought, a happy thought.

这是一个幸运的想法，一个快乐的想法。

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A happy thought struck her.

她的心头突然涌出一个愉快的念头。

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Suddenly a happy thought struck her.

她突然想起一个很妙的想法。

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She was never happy with her school work until she thought it was perfect.

VOA: special.2010.04.25

Because I thought about it a lot Welles chose that word I guess obviously that frame was a happy picture ? In the word? Why that word?

因为我对这个问题想了很多,为什么威尔斯要选择这个词,我觉得很明显，这个镜头是幸福的,词内涵的深意？还是为什么选这个词？

麻省理工公开课 - 电影哲学课程节选

They thought everyone who'd be taking this class would be taking it because they are already really happy and they want to study about how amazing they are.

他们认为每个上这门课的人会上这门课,是因为他们已经很幸福了,他们想研究自己到底有多棒。

哈佛公开课 - 幸福课课程节选

With energy exports, mainly from Alberta, driving the Canadian economy, this is not a happy thought for Canadians.

ECONOMIST: Canada

Year after year, the Edinburgh Festival confirms that happy thought.

ECONOMIST: The stage of nations

Then I thought how happy I was for my family, and then immediately I thought of (Big East founder and first commissioner) Dave Gavitt and what he formed, and all of us in some way or another flourish because of Dave Gavitt.

WSJ: No. 4 Louisville wins Big East title