threefold barrier

英 [threefold barrier]
美 [threefold barrier]

中文释义

三倍垒

单词分析

单词结构：

threefold barrier

字母数：17

记忆提示

🎯 重点记忆：

  • 单词拼写：threefold barrier
  • 核心含义：三倍垒

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更新时间：2026-03-25 20:19:40