as hard as a nether millstone

[as hard as a nether millstone]
[as hard as a nether millstone]

中文释义

铁石心肠

单词分析

单词结构:

as hard as a nether millstone

字母数:29

记忆提示

🎯 重点记忆:

  • 单词拼写:as hard as a nether millstone
  • 核心含义:铁石心肠