knuckle down

Traduzioni
взяться всерьез
It's time to knuckle down and finish this project.
Пора взяться всерьез и закончить этот проект.
Definizioni
To begin to work hard or put in serious effort, especially after a period of not working as diligently.
Parole
knuckle

verb
ударить кулаком
down

adverb
вниз