arch keystone

英 [arch keystone]
美 [arch keystone]

中文释义

[建] 拱顶石

单词分析

单词结构：

arch keystone

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：arch keystone
  • 核心含义：[建] 拱顶石

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更新时间：2026-03-15 05:03:27