New research from Boston University finds that 86 percent of adults carry a store loyalty card and use it, even though cards give stores the right to track consumer purchases.是什么意思_New research from Boston University finds that 86 percent of adults carry a store loyalty card and use it, even though cards give stores the right to track consumer purchases.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句