libretto的复数形式为：librettos...

libretto的音标：libretto的英式发音音标为：[lɪ'bretəʊ]libretto的美式发音音标为：[lɪ'bretoʊ]...

The printed libretto was handsomely got up.这本印刷的歌剧剧本装帧得很美观.Opera in three acts by G. Puccini , Libretto by G. Giacosa and L. Illica.三幕歌剧:G. 普契尼作曲;G. 贾柯查和L. 伊里卡编剧....

n.（歌剧等的）剧本...