knuckle down
knuckle down是什么意思、knuckle down怎么读
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knuckle down汉语翻译
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knuckle down英语解释
动词 knuckle down:
- work very hard, like a slave同义词：slave, break one's back, buckle down
knuckle down例句
- If you want to pass that exam, you'll have to knuckle down (to some hard work).你要想考试及格，就得开始下功夫(苦干)了。