azotize

例句：

1. 1.The paint on the wall has azotized over time.
   墙上的油漆随着时间的推移已经褪色了。
2. 2.The flowers are fading away in the sun.
   花朵在阳光下正在逐渐凋谢。
3. 3.The fabric is starting to azotize after washing.
   这件衣物在洗涤后开始褪色。