on a king's demand. 结果一去不返

517. He's spent half his life fighting Robert's wars.
     他舍生忘死为劳勃打下江山
518. He owes him nothing.
     问心无愧，何来亏欠
519. Your father and brother rode south once
     你父亲和兄长曾奉命南下
520. on a king's demand.
     结果一去不返
521. A different time.
     时局不同
522. A different king.
     国王也不一样
523. When do I meet with the Khal?
     我何时能与卡奥面谈

来自《权力的游戏 第一季 第一集 Game of Thrones S01E01 七国皇帝对临冬城主委以重任》第 520 行