CIGNA, originated in 1792, is one of the largest insurance companies in U.S. especially in the aspect of employee welfares.是什么意思_CIGNA, originated in 1792, is one of the largest insurance companies in U.S. especially in the aspect of employee welfares.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句