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

单词	smashboard signal
释义	smashboard signal \ˈ ̷ ̷ˌ ̷ ̷-\ noun : a railroad signal the arm of which is designed to be broken when passed in the stop position
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