| 短语 | as hard as the nether millstone |
| 释义 | as hard as the nether millstone铁石心肠：He has a heart as hard as the nether millstone and he often maltreats the poor and the old.他是铁石心肠，时常虐待穷人和老人。 |
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英语短语词组词典共收录41885条英汉双解短语词组词条，基本涵盖了全部常用短语词组的翻译及用法，是英语学习的有利工具。