smudge

音标发音

Years of not touching screens — so as not to smudge or scar — made me wary.
多年来未碰过屏幕--为了不弄脏或弄上划痕--不得不小心谨慎。
Select the ‘Smudge’ tool and carefully push the white of the two adjoining teeth towards each other.
选区涂抹工具，然后小心的将缝隙两边的白色互相连接起来。
Then there was a bit about “you deserve to be with legal tender that fulfills you more than I ever could.” Another smudge.
并且，还有句类似”你应该用法定货币去完成我不能完成的事情“之类的话被一个污点覆盖。

Furthermore, with anti-smudge technology, those greasy thumb prints are a thing of the past.
ENGADGET: Samsung Wave: 3.3-inch Super AMOLED, Bluetooth 3.0, and new Bada OS (updated)
Besides, Europe is about deal-making, about fudge and smudge, about warm exhortations meaning nothing precise.
ECONOMIST: The European Union's constitution
It may have been impossible for Mr Obama to rise from the muck of Illinois without a smudge on his navy suit.
ECONOMIST: The candidates at home (2)

a mark with no particular shape that is caused, usually by accident, by rubbing something such as ink or a dirty finger across a surface
If ink, paint, etc. smudges or if someone smudges it, it becomes dirty or not clear because someone or something has touched it.

A smudge is a dirty mark.
If you smudge a substance such as ink, paint, or make-up that has been put on a surface, you make it less neat by touching or rubbing it.
If you smudge a surface, you make it dirty by touching it and leaving a substance on it.