| 单词 | grindstone |
| 释义 | Word Frequency grindstone(ˈɡraɪndˌstəʊn) noun 1. a. a machine having a circular block of stone or composite abrasive rotated for sharpening tools or grinding metal b. the stone used in this machine c. any stone used for sharpening; whetstone 2. another name for millstone 3. keep one's nose to the grindstone |
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