literally have zero idea what this means please interpret!


Ashamed sometimes thy beauties should remain
As yet unsung, sweet lady, in my rhyme;
When first I saw thee I recall the time,
Pleasing as none shall ever please again.
But no fit polish can my verse attain,
Not mine is strength to try the task sublime:
My genius, measuring its power to climb,
From such attempt doth prudently refrain.
Full oft I oped my lips to chant thy name;
Then in mid utterance the lay was lost:
But say what muse can dare so bold a flight?
Full oft I strove in measure to indite;
But ah, the pen, the hand, the vein I boast,
At once were vanquish'd by the mighty theme!