罗马假日中的诗的全文是什么啊？

<<罗马假日>>里赫本背的一首诗,

　　ARETHUSA by Percy Bysshe Shelley 1820

　　I

　　ARETHUSA arose
　　From her couch of snows
　　In the Acroceraunian mountains,--

　　From cloud and from crag,
　　With many a jag,
　　Shepherding her bright fountains.

　　She leapt down the rocks,
　　With her rainbow locks
　　Streaming among the streams;--

　　Her steps paved with green
　　The downward ravine
　　Which slopes to the western gleams;

　　And gliding and springing
　　She went, ever singing,
　　In murmurs as soft as sleep;

　　The earth seemed to love her,
　　And Heaven smiled above her,
　　As she lingered towards the deep.

　　II

　　Then Alpheus bold,
　　On his glacier cold,
　　With his trident the mountains strook;

　　And opened a chasm
　　In the rocks--with the spasm
　　All Erymanthus shook.

　　And the black sout