名词
中文翻译：外来物质
同义词：
['foreign matter', 'non-native material']
例句：
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1.The construction crew found a large amount of extraneous matter in the area.
建筑工人在该地区发现了大量外来物质。
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2.The company decided to remove all extraneous matter from its products.
该公司决定从其产品中去除所有外来物质。
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3. The research team collected samples of extraneous matter for further analysis.
研究小组收集了外来物质样本以进行进一步分析。