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-现代词典

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
随便看	potassium bromate potassium bromide potassium carbonate potassium chlorate potassium chloride potassium chromate potassium cobaltinitrite potassium cyanate potassium cyanide potassium dichromate potassium ferricyanide potassium ferrocyanide potassium fluoride potassium hydrate potassium hydroxide potassium hypochlorite potassium iodide potassium manganate potassium mercuric iodide potassium nitrate potassium oxalate potassium oxide potassium perchlorate potassium permanganate potassium persulfate

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