抹黑

例句：

1. 1. The paint on the wall has blackened over time.
   墙上的油漆已经随时间变黑了。
2. 2.She blackened her reputation by spreading rumors about him.
   她通过散布关于他的谣言来诋毁他的名誉。
3. 3. The company's CEO was blackened by scandals during his tenure.
   该公司的首席执行官在任职期间因丑闻而声名狼藉。