spontaneous coal

英 [spontaneous coal]
美 [spontaneous coal]

中文释义

[矿物] 自燃煤

单词分析

单词结构：

spontaneous coal

字母数：16

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🎯 重点记忆：

  • 单词拼写：spontaneous coal
  • 核心含义：[矿物] 自燃煤

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更新时间：2026-03-11 00:55:50