英语词汇“block signal”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典-现代词典

单词	block signal
释义	block signal —block signaling. a fixed railroad signal governing the movements of trains entering and using a given section of track. [1880-85]
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英语词典包含168451条英英释义在线翻译词条，基本涵盖了全部常用单词的英英翻译及用法，是英语学习的有利工具。