名词中文翻译
中文翻译：棕色污渍
同义词：
['brown spot', 'brown mark']
例句：
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1.The old sofa has a brown stain on it from years of use.
旧沙发有一块褐色的污渍，是多年使用的痕迹。
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2. The tablecloth had a brown stain on it that we couldn't get out.
桌布上有一块褐色的污渍，我们无法去除。
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3. The stain on the shirt was so dark that it looked like it had been dyed.
衬衫上的污渍太深了，看起来像是染色过的。