单词 | grindstone |
释义 | grind·stone (grīndstōn′) n. Idioms: 1. A revolving stone disk used for grinding, polishing, or sharpening tools. 2. A millstone. have/keep (one's) nose to the grindstone To work hard and steadily. put (one's) nose to the grindstone grindstone To work in earnest. |
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