coal mining under railways

[coal mining under railways]
[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

记忆提示

🎯 重点记忆:

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