Obviously it's a special day for all the family, so we spend a lot of time - and also lots of money - on dresses, food and flowers.

Obviously 是形容词 obvious 的副词形式，由 obvious（明显的）加上后缀 -ly 构成。obvious 来自拉丁语 obvius，意思是"在路上的、显而易见的"。obviously 表示"明显地、显然地"，用于强调说话者认为某事非常清楚或容易理解。