英语词汇“underground railroad”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	underground railroad
释义	underground railroad noun 1. : underground railway 2. usually capitalized U&R : a system of cooperation among active antislavery people in the United States before 1863 by which fugitive slaves were secretly helped to reach the North or Canada
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