work your fingers to the bone
US /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/
UK /wɜrk yʊər ˈfɪŋɡərz tu ðə boʊn/

1.
拼命工作, 辛勤劳作
to work extremely hard, often to the point of exhaustion
:
•
She had to work her fingers to the bone to support her family.
她不得不拼命工作来养家糊口。
•
He's been working his fingers to the bone on this project for months.
他为了这个项目已经拼命工作好几个月了。