keep one's nose to the grindstone 详细解释

keep one's nose to the grindstone

埋头苦干

补充

keep one's nose to the grindstonekeep one's nose to the grindstone1.使自己一刻不停地拼命干I will take exams in two weeks, so I'm keeping my nose to the grindstone just at the moment.我两星期后要考试, 因而眼下正埋头苦读。