求翻译：我去公园散步。几个小孩在湖边玩耍。一男孩落水。我听到呼救声。我跳入救男孩上岸。男孩恢复知觉。我把男孩送回家。男孩父母非常感激。我虽疲劳与寒冷，但很高兴是什么意思？

I walk to the Park. Several children playing in the Lake. A boy drowning. I heard a cry for help. I jumped in to save the boy ashore. The boy regained consciousness. I sent the boy to go home. Boy's parents are very grateful. I am tired and cold, but happy