名词
中文翻译：渣滓
同义词：
['scrap', 'residue', 'slag']
例句：
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1. The old car's engine is a prime example of how dregs can be recycled.
这辆旧车的发动机是如何处理废金属的一个例子。
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2. After the rain, the river was full of dregs and silt.
雨后，河流满是淤泥和沉积物。
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3. The company had to discard its dregs and focus on newer technologies.
该公司不得不丢弃其废弃物，专注于更先进的技术。