retraction bulb

英 [retraction bulb]
美 [retraction bulb]

中文释义

回缩球

单词分析

单词结构：

retraction bulb

字母数：15

记忆提示

🎯 重点记忆：

  • 单词拼写：retraction bulb
  • 核心含义：回缩球

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更新时间：2026-01-30 00:10:51