machine boy = joven ayudante del encargado de la máquina de imprimir
Def: En imprenta antigua, joven que ayudaba al operario a cargo de la máquina de imprimir
Ex: Printing machines were operated by two new grades of worker, skilled machine-minders and unskilled machine boys.
machine boy
(n.) = joven ayudante del encargado de la máquina de imprimir
Ex: Printing machines were operated by two new grades of worker, skilled machine-minders and unskilled machine boys.