con el sudor de + Posesivo + frente

= by the sweat of + Posesivo + brow

Ex. This paper focuses on the strengths and weaknesses of Mark Reisler's 'By the Sweat of Their Brow: Mexican Immigrant Labor in the United States'.

* * *

= by the sweat of + Posesivo + brow

Ex: This paper focuses on the strengths and weaknesses of Mark Reisler's 'By the Sweat of Their Brow: Mexican Immigrant Labor in the United States'.