The Old Gray Mare

Oh, the old gray mare, She isn't what she used to be, Isn't what she used to be, Isn't what she used to be. The old gray mare, he isn't what she used to be. Many long years ago, Many long years ago, Many long years ago.

the old gray mare — старая серая кобыла,
she isn't what she used to be many long years ago — она уже не та, что была раньше, много лет назад.