ballast cleaning

英 [ballast cleaning]
美 [ballast cleaning]

中文释义

清筛道碴

单词分析

单词结构：

ballast cleaning

字母数：16

记忆提示

🎯 重点记忆：

  • 单词拼写：ballast cleaning
  • 核心含义：清筛道碴

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更新时间：2026-03-11 00:17:30