Jiérì zhuāngshì gěi chéngshì zēngtiān le xǐqìng de qìfēn.
Holiday decorations added a festive atmosphere to the city.
Tips
usage
增添 often takes abstract objects like 气氛 (atmosphere), 乐趣 (fun), 麻烦 (trouble), or 色彩 (color). Compare with 增加, which is used more for quantities and numbers.