名词
中文翻译：暗斑
同义词：
['spot', 'stain', 'mark例句：1. The dark speck on the wall is a mystery that no one can solve.（墙上的暗斑是一个无人能解的谜。）']
例句：
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1. The dark speck on the wall is a mystery that no one can solve.
墙上的暗斑是一个无人能解的谜。
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2. The stain on his shirt is from a spilled drink.
他衬衫上的斑点是饮料洒出来的。
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3.The mark on the map indicates the location of the lost treasure.
地图上的标记表示丢失宝藏的位置。