to work hard, or focus heavily on work

الإنجليزية - الإنجليزية

تعريف to work hard, or focus heavily on work في الإنجليزية الإنجليزية القاموس.

nose to the grindstone

If he'd keep his nose to the grindstone a bit more, he could be a pretty good student.

الواصلة

to work hard, or fo·cus hea·vi·ly on work