I felt loath to sully the gleaming brass knocker by handling it.

我不愿意用手去抓那个闪亮的黄铜门环以免把它弄脏。

《柯林斯英汉双解大词典》

I mean I do hope that the fact that I'm interested in in rock and roll isn't perceived by some, as it may well be, to sully the ideals of the Louise Center for the arts and these high-minded things.

我当然希望，我对摇滚的,喜爱，在一些人眼中，不会玷污,路易斯艺术中心这种高雅的理念。

普林斯顿公开课 - 人性课程节选

The German carmakers' costs are too high and their brands too valuable to sully with low-budget overtones.

ECONOMIST: Germany's cars

"MLB and cable sports tried to sully the reputation of an innocent man, " Green Bay Packers quarterback Aaron Rodgers said on Twitter.

WSJ: MLB: Ryan Braun's 50-Game Suspension Overturned - Milwaukee Brewers

Members of the biggest teachers' union have been accused by another union leader of helping to sully the public image of the profession.

BBC: Militants accused of harming teaching