keep your nose to the grindstone

US /kiːp jʊər noʊz tə ðə ˈɡraɪndˌstoʊn/
UK /kiːp jʊər noʊz tə ðə ˈɡraɪndˌstoʊn/
"keep your nose to the grindstone" picture
1.

lavorare sodo, impegnarsi a fondo

to work hard and continuously at a task

:
If you want to succeed, you need to keep your nose to the grindstone.
Se vuoi avere successo, devi lavorare sodo.
She's been keeping her nose to the grindstone all semester to get good grades.
Ha lavorato sodo per tutto il semestre per ottenere buoni voti.