单词	Underground Railroad
释义	Underground Railroad noun variants or less commonly Underground Railway : a system of cooperation among active antislavery people in the U.S. before 1863 by which people escaping enslavement were secretly helped to reach the North or Canada Word History First Known Use 1842, in the meaning defined above
随便看	initial coin offering initial condition initial letter initial line initial public offering initial reserve initial rhyme Initial Series initial side initial stress initial teaching alphabet initialed initialer initialers initialing initialisation initialisations initialise initialised initialiser initialisers initialises initialising initialism initialisms

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