名词
中文翻译：残余物
同义词：
['residue', 'by-product', 'residue product']
例句：
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1. The farmersstill use the old method to produce rice.
农民们仍然使用旧方法来生产大米。
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2. The chemical factory produces a lot of residue in the process.
这家化工厂在生产过程中产生了大量的残留物。
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3. The residue from the wastewater treatment plant is being studied for its potential uses.
正在研究污水处理厂的残留物的潜在用途。