这位政治家的声誉因腐败指控而被永久玷污了。

The politician's reputation was forever ___stained by the corruption allegations.

那段黑暗的篇章玷污了这个国家的历史记录。

That dark chapter ___stained the nation's historical record.

首席执行官的犯罪行为损害了公司的品牌形象。

The CEO's criminal conduct ___stained the company's brand.