"he had a smudge on his cheek"
There was a green smudge on her pinafore.
The smudge which Tess had set upon that nobility.
Eyes sore from smoke..and faces smudged with charcoal.
This was a boy..whose school books would be smudged and blotted.
牛津高階第八版
美國韋氏詞典
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維基百科 (自由的百科全書)