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。
江苏热线英汉汉英双解词典包含207361条英汉翻译词条，涵盖了常用英语单词及词组短语的翻译及用法，是英语学习的必备工具。