keep/put your nose to the grindstone idiom informal
长时间苦干
to work very hard for a long time
She kept her nose to the grindstone all year and got the exam results she wanted. 她整整一年勤奋苦学，终于取得了满意的考试成绩。
| 单词 | keep/put your nose to the grindstone |
| 释义 | keep/put your nose to the grindstone idiom informal 长时间苦干 to work very hard for a long time She kept her nose to the grindstone all year and got the exam results she wanted. 她整整一年勤奋苦学，终于取得了满意的考试成绩。 |
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