work one's fingers to the bone 非常努力地工作；拼命干活；不住手地做

【例句】
She worked her fingers to the bone to feed the family.
她拼了命地工作，就为了养家糊口。

I worked my fingers to the bone to get the garden ready for the summer.
我费了好大劲儿，拼命工作了好一阵儿才把花园整理好，迎接夏天的到来。