a small brownish spot (of the pigment melanin) on the skin 同义词：freckle,
例句与用法
1.
Histologic examination of the tan patch reveals features of lentigo simplex , whereas the speckled macules and papules disclose melanocytic nevi 组织病理下褐色斑块呈现单纯性黑痣，而其上的斑点及丘疹则为黑色素细胞痣。
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