it had already happened. 已经太迟了

642. We should go, my lady. No!
     夫人，我们该走了 不
643. My lady!
     夫人
644. By the time they knew what was happening,
     等他们察觉到发生了什么事
645. it had already happened.
     已经太迟了
646. Lady Stark. I'd offer you my sword,
     史塔克夫人，很乐意为您效劳
647. but I seem to have lost it.
     可惜我的剑不知道哪儿去了
648. It's not your sword I want.
     我不需要你的效劳

来自《权力的游戏 第一季 第九集 Game of Thrones S01E09 奈德被斩首》第 645 行