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known substance

英 [known substance]
美 [known substance]

中文释义

已知物;已知物质

单词分析

单词结构:

known substance

字母数:15

记忆提示

🎯 重点记忆:

  • 单词拼写:known substance
  • 核心含义:已知物;已知物质

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更新时间:2026-02-06 11:21:28

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