非正式表达 work your socks off “拼命地干活，连袜子都掉了”被用来形容为达成目标而十分勤奋、努力地做某事。
I worked my socks off at university and graduated with a great degree.
If you want to progress in this company you'll have to work your socks off.
She earns a lot of money, but I know she really work her socks off.
另一个相似的短语 work it off 或 work off 通常指通过锻炼来消耗掉吃下的食物转化成的热量。
When I've eaten too much, I usually try to work it off by going for a long run.
I can't believe I've just eaten two chocolate bars. That's going to take about an hour on the exercise bike to work off.