名词中文翻译
中文翻译：化学污点
同义词：
['chemical stain', 'chemical discoloration']
例句：
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1.The scientist discovered a chemical brownstain on the sample.
科学家在样本上发现了一个化学污点。
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2. The accident caused a chemical brownstain on the car's paint.
事故导致汽车油漆上出现了化学污点。
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3. The researcher found that some chemicals could cause chemical brownstains in the environment.
研究者发现某些化学物质会在环境中造成化学污点。