These are word's definitions related to knuckle-down. Click on any word to go to its word's detail page. Or, 更多关于knuckle-down的信息
0 to start working or studying hard
You're going to have to really knuckle down (to your work) if you want to pass your final exams. 如果你想通过期末考试,就必须用功学习。
最新单词
European
2021年8月16日
每日一词
Shimmer