crushed-stone ballast

英 [crushed-stone ballast]
美 [crushed-stone ballast]

中文释义

[铁路] 碎石道碴

单词分析

单词结构：

crushed-stone ballast

字母数：21

记忆提示

🎯 重点记忆：

  • 单词拼写：crushed-stone ballast
  • 核心含义：[铁路] 碎石道碴

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更新时间：2026-03-24 22:52:23