knuckle down

汉语翻译

英语解释：

动词 knuckle down:

1. work very hard, like a slave
   同义词：slave, break one's back, buckle down

例句：

1. 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。