| 词组 | knuckle down |
| 释义 | knuckle down knuckle down informal to start to work or study more seriously than you have been doing: ▪ Murray called on his players to knuckle down after a series of disappointing results. + to ▪ When Kylie returned to school she was determined to knuckle down to the job of passing her exams. ■ SIMILAR TO: ↑buckle down |
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