break your back
努力地工作或奋斗，尽力完成一个任务
口语·形容非常努力或辛苦工作
英文释义
to work extremely hard or put in a lot of physical effort
例句
I broke my back to finish the project before the deadline, but my boss didn't even say thank you.
典故来源
源自体力劳动中背部承受巨大压力的形象，比喻为了完成目标付出极大努力或牺牲。