| 释义 |
knuckle²vknuckle downphr v [i]informal to start working hard 【非正式】 开始努力工作knuckle underphr v [i]informal to do what you are told to do, even though you do not want to 【非正式】 屈从，屈服knuckle downinformal to start working hard 【非正式】 开始努力工作knuckle underinformal to do what you are told to do, even though you do not want to 【非正式】 屈从，屈服 |