名词
中文翻译：黑头
同义词：
['black spot', 'dark spot例句：1. The black head on his forehead is a sign of bad luck.（他额头上的黑痣预示着不吉利。）']
例句：
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1. The black head on his forehead is a sign of bad luck.
他额头上的黑痣预示着不吉利。
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2.He had a black head on his left ear that he had never been able to get rid of.
他的左耳上有一个黑痣，他一直没能去掉。
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3.The doctor removed the black head and found it to be a small tumor.
医生把黑痣给切除了，发现是个小肿瘤。