Two other traditions for welcoming the New Year are a midnight kiss and an attempt to sing a song that almost no one knows.

VOA: special.2009.12.28

And he says, I don't, "No one really knows where the Nile River starts."

他说，“我不，没人真的知道尼罗河的源头到底在哪里。”

神话有趣的课 - SpeakingMax英语口语达人

He says it is true that such crops can have higher output with less cost,but added: No one knows the consequences that will have on soil fertility and the human body.

VOA: special.2010.05.18