Of or being a U.S. political party founded in1848 to oppose the extension of slavery into U.S. territories and the admission of slave states into the Union.是什么意思_Of or being a U.S. political party founded in1848 to oppose the extension of slavery into U.S. territories and the admission of slave states into the Union.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句