Returning to the same word, phrase or construction, at the start of verses or of successive sentences (anaphora) or throughout the text, to give rhythm, emphasis or insistence.
In The Slum
a Bertoleza, sempre suja e tisnada, sempre sem domingo nem dia santo, lá estava ao fogão, mexendo as panelas e enchendo os pratos, there was Bertoleza at the stove, always grimy and sooty, always without a Sunday or a holy day, stirring the pots and filling the plates
The adverb "sempre" opens two successive expressions, "sempre suja e tisnada, sempre sem domingo," and the echo insists on Bertoleza's unbroken routine while the rest of the tenement changes its clothes.
Chapters VI to VII: Rita Baiana's Sunday and the Pagode, the narrator