The lights, the people, the atmosphere all created a dazzling spectacle where everyone was having fun and singing together, even if they didn't really know the words.

dazzling 是动词 dazzle 的现在分词形式作形容词用。dazzle 由 dazz（眩目）和动词后缀 -le（表示反复动作）组成，本意是"使目眩"。dazzling 形容"令人眼花缭乱的、耀眼的"，常用来形容视觉上非常明亮或令人印象深刻的场景。