This song is based on an old folk tune.

这支歌是根据一首古老的民歌曲调创作的。

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An old folk remedy, extract from these dark berries appears to block flu viruses in test tube studies.

这种水果是一种古老的民俗疗法。在一项试管研究中，这种黑色浆果提取物似乎能够阻止流感病毒的袭击。

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The proposals offer no guarantee that old folk will be able to hang on to their homes.

提案里也没有条款保证老人们确实能够一直住在自己的房子里。

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the thirty-four year old performer continues to combine the sounds of jazz, folk music and the blues.

VOA: special.2009.07.10

Tell us if you have a favorite American blues or folk singer young or old -- and what makes that person's music special to you.

VOA: special.2010.01.18

People of all ages came out, fathers carrying toddlers on their shoulders for a better view, old folk sitting on deck-chairs and waving Union Flags.

BBC: Drumcree's hill of 'uneasy calm'

"From the Ground Up" (Blue Dirt), the debut album by 24-year-old John Fullbright, is a stellar collection of folk and Americana that already has the feel of a classic.

WSJ: Lost in the Trees, Frank Ocean, John Fullbright and Other Best of 2012

Jeremy Lin, the 23-year-old Knicks guard, has ascended from afterthought to New York folk hero in half a week.

WSJ: Jeremy Lin's Success Provides Spark For New York Knicks