coal mining under railways

英 [coal mining under railways]
美 [coal mining under railways]

中文释义

铁路下采煤

单词分析

单词结构：

coal mining under railways

字母数：26

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🎯 重点记忆：

  • 单词拼写：coal mining under railways
  • 核心含义：铁路下采煤

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更新时间：2025-12-11 06:20:34