[with obj.]render (something) poorer in quality by adding another substance, typically an inferior one
在…中掺杂(尤指掺假)
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the food provided by industry is often adulterated .工业生产的食物常常掺入杂质。
〈古〉 不纯的,不真的
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adulterate remedies .掺假药物。
"early 16th cent. (as an adjective): from Latin