A 1976 outbreak of another unusual swine flu at Fort Dix, N.J., prompted a problematic mass vaccination campaign, but that time the flu fizzled out .是什么意思_A 1976 outbreak of another unusual swine flu at Fort Dix, N.J., prompted a problematic mass vaccination campaign, but that time the flu fizzled out .在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句