1 (used for describing strong negative feelings or cold weather) extremely （用于形容极不快的感觉或寒冷天气）极，非常: bitterly disappointed/resentful/disappointed 极其失望／怨恨a bitterly cold winter/wind 严冬；刺骨的寒风

2 in an angry and disappointed way 悲愤地；惨痛地: ‘I've lost everything,’ he said bitterly. “我已失去了一切。”他惨痛地说。