| 词汇 | 磨穿铁砚 |
| 释义 | 磨穿铁砚磨穿铁砚[mó chuān tiě yàn]1.■grind [wear] through an inkstone [iron inkslab] -- long years of ardent study; grind away at one's studies; study diligently and unremittingly |
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