drainage of coal mines

英 [drainage of coal mines]
美 [drainage of coal mines]

中文释义

煤矿排水

单词分析

单词结构：

drainage of coal mines

字母数：22

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🎯 重点记忆：

  • 单词拼写：drainage of coal mines
  • 核心含义：煤矿排水

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更新时间：2026-02-08 03:57:34