carbon spot

中文含义：碳斑，指在人体皮肤上因高浓度污染物质如多氯联苯（PCBs）、多环芳烃（PAHs）等暴露引起的黑色色素斑点。

英语词性：noun

美式音标： /ˈkɑrbən spɑt/

同义词：carbon spot pigmentation, environmental hyperpigmentation, industrial melanism

易混淆单词：carbon footprint, carbon monoxide

双语例句：

1. The study found that carbon spot pigmentation was significantly associated with high levels of environmental PCB contamination. (这项研究发现，碳斑色素沉淀与环境多氯联苯污染物高浓度显著相关。)

2. Carbon spot is a common feature of industrial melanism in moths, which is an example of natural selection driven by human-modified environments. (碳斑是蛾类产生工业黑化现象中的普遍特征，这是人类改变环境所驱动的自然选择的一个例子。)

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