back-up block

英 [back-up block]
美 [back-up block]

中文释义

支撑块

单词分析

单词结构：

back-up block

字母数：13

记忆提示

🎯 重点记忆：

  • 单词拼写：back-up block
  • 核心含义：支撑块

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更新时间：2026-03-16 20:38:46