Issues related to retirement benefits, disability pay and medical insurance, as well as recent demands by some very large unions for lifetime job security, are very much in the bargaining forefront in the latter part of the 20th century.是什么意思_Issues related to retirement benefits, disability pay and medical insurance, as well as recent demands by some very large unions for lifetime job security, are very much in the bargaining forefront in the latter part of the 20th century.在線(xiàn)翻譯_英語(yǔ)_讀音_用法_例句