名词
中文翻译：Unknown
同义词：
['1. Tarn', 'Tarnish', 'Tarnishment']
例句：
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1. The old painting on the wall is tarnished with time.
墙上的那幅旧画已经褪色了。
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2. The tarnish on her fingernails was caused by a chemical spill.
她指甲上的斑驳是由于化学泄漏造成的。
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3. The tarnish of the metal has made it difficult to use as a tool.
金属的锈蚀使得它难以作为工具使用。