名词
中文翻译：残留物
同义词：
['remainder', 'residue']
例句：
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1. The chemical analysis revealed a significantamount of residual oil in the sample.
化学分析显示样本中存在大量残留油。
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2.The leftovers from the dinner were stillwarm and delicious.
晚餐的剩余食物仍然温热美味。
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3. The scientist analyzed the residue leftbehind by the volcanic eruption.
科学家分析了火山喷发后留下的残渣。