| 单词 | knuckle down |
| 释义 | knuckle down knuckle down INFORMAL — phrasal verb with knuckle /ˈnʌk.l̩/ verb ↑Verb Endings for knuckle down ► F0 to start working or studying hard: » You're going to have to really knuckle down (to your work) if you want to pass your exams.Thesaurus+: ↑Work, working and the workplace , ↑Working hours and periods of work |
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