runs up and down

英 [runs up and down]
美 [runs up and down]

中文释义

上下连串

单词分析

单词结构：

runs up and down

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：runs up and down
  • 核心含义：上下连串

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更新时间：2026-02-05 19:24:43