One of last year’s biggest sellers was the cast recording of “Mamma Mia!”, which features songs by ABBA, a fizzy 1970s pop group.

去年最多销售之一的是“妈妈米娅”,该特色歌曲由一支上世纪70年代泡泡流行乐团ABBA。

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A quatrain may also be any group of four lines unified by a rhyme scheme. Quatrains usually follow an abab, abba, or abcb rhyme scheme.

四行诗通常是通过押韵组合成的四行诗节的诗，亚运形式一般为abab， abba，或abcb。

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The first permanent museum dedicated to Swedish pop group Abba is to open its doors in Stockholm later.

BBC: Abba museum to open doors in Stockholm

The Polar Music Prize was founded by Stig Anderson, the manager of Swedish pop group ABBA, in 1989.

BBC: Patti Smith and Kronos Quartet accept Polar music prize

The award, founded in 1989 by the late Stig Anderson, manager of Swedish pop group ABBA, has been handed out every year since 1992 and is typically shared by a pop artist and a classical musician.

NPR: N'Dour, Saariaho Share Sweden's Polar Music Prize