sign on英语标准发音：sign on英式发音：美式发音：翻译中文登录sign on – 基本释义[词典1]办理失业登记（以失业救济金）sign on – 英英词典VERB[动词]engage by written agreement以书面协议聘用They signed two new pitchers for the next season下个赛季他们签了两名新投手signcontractsign upsign on – WEB词典sign on签约受雇用签约任用签到social sign-on社会化登录社交群组登录Sign-On Close运动员检录关闭 参考资料： 1.百度翻译：sign on 2.有道词典：sign on 3.爱词霸：sign on
