‘象彩虹一样的兰色的鸟儿们，自由的飞在天空中，我为什么飞不了呢？’英文怎么写

这个是《绿野仙踪》里面的朱迪·嘉兰唱的over the rain bow.
完整歌词：
somewhere over the rainbow way up high
there's a land that i heard of once in a lullaby
somewhere over the rainbow skies are blue
and the dreams that you dare to dream really do come true
someday i wish upon a star
and wake up where the clouds are far behind me
where troubles smelled like lemon drops
way above the chimney tops
that's where you'll find me
somewhere over the rainbow blue birds fly
birds fly over the rainbow
why then, oh why can't i?

if happy little blue birds fly beyong the rainbow
why, oh why can't i ?
你要的那两句：就是最后这两句。

jfhwuweuowas wayerw fwheufwe?