名词
中文翻译：残余物
同义词：
['remaining residue', 'residual substance']
例句：
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1.The residue of the chemical reaction is still visible on the surface.
化学反应的残余物仍然在表面可见。
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2.The residue of the spilled oil was a mess to clean up.
溢出的油的残余物清理起来很麻烦。
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3.The scientists analyzed the residue left by the fire for clues about the cause.
科学家们分析了火灾留下的残余物以寻找起火原因。