primary excavation

英 [primary excavation]
美 [primary excavation]

中文释义

一次回采;初挖

单词分析

单词结构：

primary excavation

字母数：18

记忆提示

🎯 重点记忆：

  • 单词拼写：primary excavation
  • 核心含义：一次回采;初挖

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更新时间：2026-04-12 02:03:50