A young man, alone, on the high bridge over the Tagus which
     was too narrow to allow the sheep driven by the lean,
     enormous dogs whose hind legs worked slowly on cogs
to pass easily . . .
     (he didn't speak the language)

Pressed against the parapet either side by the crowding sheep,
     the relentless pressure of the dogs communicated
     itself to him also
above the waters in the gorge below.

A young man, alone, on the high bridge over the Tagus which
     was too narrow to allow the sheep driven by the lean,
     enormous dogs whose hind legs worked slowly on cogs
to pass easily . . .
     (he didn't speak the language)

Pressed against the parapet either side by the crowding sheep,
     the relentless pressure of the dogs communicated
     itself to him also
above the waters in the gorge below.

They were hounds to him rather than sheep dogs because of
     their size and savage appearance, dog tired from the
     day's work.
The stiff jerking movement of the hind legs, the hanging heads
     at the shepard's heels, slowly followed the excited and
     crowding sheep.

The whole flock, the shepard and the dogs, were covered with
     dust as if they had been all day on the road. The pace
     of the sheep, slow in the mass,
governed the man and the dogs. They were approaching the
     city at nightfall, the long journey completed.

In old age they walk in the old man's dreams and will still
     walk in his dreams, peacefully continuing in his verse
     forever.