英语词汇“third rail”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	third rail
释义	WordReference Random House Unabridged Dictionary of American English © 2024 third′ rail′, [Railroads.] Rail Transporta rail laid parallel and adjacent to the running rails of an electrified railroad to provide electric current to the motors of a car or locomotive through contact shoes. Rail Transportan additional running rail laid on the same ties as the two regular rails of a railroad track to provide a multigauge capability. 1865–70, American.
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