民谣《绿袖子》 绿袖永兮，非我新娘。 “永兮”是什么意思？全句又是什么意思？

先看原文，根据全文来看： 袖底风· 绿袖 　　我思断肠，伊人不臧。Alas my love, you do me wrong 　　弃我远去，抑郁难当。 To cast me off discourteously 　　我心相属，日久月长。I have loved you all so long 　　与卿相依，地老天荒。Delighting in your company 　　绿袖招兮，我心欢朗。Greensleeves was all my joy 　　绿袖飘兮，我心痴狂。Greensleeves was my delight 　　绿袖摇兮，我心流光。Greensleeves was my heart of gold 　　绿袖永兮，非我新娘。And who but my Lady Greensleeves 　　我即相偎，柔荑纤香。I have been ready at your hand 　　我自相许，舍身何妨。To grant whatever you would crave 　　欲求永年，此生归偿。I have both waged life and land 　　回首欢爱，四顾茫茫。Your love and good will for to have 　　伊人隔尘，我亦无望。Thou couldst desire no earthly thing 　　彼端箜篌，渐疏渐响。But still thou hadst it readily 　　人既永绝，心自飘霜。Thy music still to play and sing 　　斥欢斥爱，绿袖无常。And yet thou wouldst not love me 　　绿袖去矣，付与流觞。Greensleeves now farewell adieu 　　我燃心香，寄语上苍。God I pray to prosper thee 　　我心犹炽，不灭不伤。For I am still thy lover true 　　伫立垅间，待伊归乡。Come once again and love me “永兮”中的“兮”自然是语气助词，就像《离骚》里的“兮”，而“永”与后文的“永年”与“永绝”相对应，意为：虽有“永”，但不知何为永，就是对自己爱情的不确定，表示迷茫，看不到未来，不知为永远在一起还是永远诀别，所以只可以用“永兮”来表达，这仅仅是我个人的理解，希望不会太背离原意。