He wore gloves in order not to dirty his hands.

他戴手套以免把手弄脏。

youdao

He's not frightened of getting his hands dirty.

他不怕体力劳动。

《牛津词典》

The mother goes mad every time she washes the T-shirt where her son wipes his dirty hands.

他妈妈每次洗儿子用来擦脏手的t恤时都很生气。

youdao

You might say,the only way to explain the behavior is to say that at some level, he really does believe his hands are dirty, despite the fact that he says they're not.

唯一的解释也许就是，在某种程度上，他确实还是相信自己的手脏的，尽管他说它们不脏。

耶鲁公开课 - 死亡课程节选

And Charles Darwin actually, who was an astute observer of human behavior, tells a nice story to illustrate this: how "a native touched with his finger some cold preserved meat and plainly showed disgust at its softness whilst I felt utter disgust at my food being touched by a naked savage though his hands did not appear dirty."

达尔文，对人类行为观察入微，他有一个故事很好地解释了反感：,“一个土著用手指碰冷腌肉,那种软软的质地让他感到很反感,而让我感无无比反感的是我的食物,被一个没穿衣取的土著碰了，虽然他的手不脏“

耶鲁公开课 - 心理学导论课程节选

Swedes love a statesman, but they want a prime minister who gets his hands dirty.

ECONOMIST: Sweden

Unlike Rikyu, though, Koetsu got his hands dirty, shaping the clay, carving it with knife and spatula.

CNN: ASIANOW - TIME Asia | The Subtle Magic of Koetsu

Indeed the obvious omission from his curriculum vitae is time spent getting his hands dirty at the laboratory bench.

ECONOMIST: Millennium��s bugs