And yet, this messy process is still not fully understood by astronomers. But one clue has been unearthed by astronomers studying the most nearby gas clouds in the galaxy.

至今天文学家对恒星的形成都不完全了解，但是通过研究最近邻的气体云星系人们发现了一丝线索。

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But he hopes his study, published this week in the online journal PLoS One, offers an important clue.

但是他希望他本周发表在在线杂志《公共科学图书馆。综合》上的研究结果能够提供一项解决问题的重要线索。

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Then a Jeopardy! clue is displayed: "Groucho quipped, 'One morning I shot' this 'in my pajamas.'"

然后，《危险边缘》的提问线索这样说：“格劳乔打趣的说，‘一天早上我把这射在了我睡衣上’。”

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Fingerprints are one important clue in a crime scene.

VOA: special.2010.05.05

One clue lies in looking at how far we've come.

WSJ: The Economics of Leaning In

Perhaps surprisingly, one clue may lie in the popularity gap between the queen and bankers such as Mr Hester.

ECONOMIST: A bitter row about executive pay is about something bigger

No one has much clue about conditions in the countryside, but the direction of the refugee flow suggests that life there is even worse than in the capital.

ECONOMIST: Liberia