One hand is all that is needed. 你要单手持剑

763. It's too heavy. It is heavy as it needs to be
     太重了 这样才能锻炼你的
764. to make you strong.
     手臂肌肉
765. Just so.
     就是这样
766. One hand is all that is needed.
     你要单手持剑
767. Now you are standing all wrong.
     但你的站姿错了
768. Turn your body sideface.
     身体侧一点
769. Yes.
     对

来自《权力的游戏 第一季 第三集 Game of Thrones S01E03 雪诺抵达绝境长城》第 766 行