名词
中文翻译：受污染的催化剂
同义词：
['polluted catalyst', 'contaminated substance', 'polluting agent']
例句：
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1. The contaminated catalyst was responsible for the chemical reaction.
受污染的催化剂是化学反应的原因。
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2.The contaminated catalyst was used to produce a new drug.
受污染的催化剂被用来生产一种新的药物。
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3.The contaminated catalyst was removed from the reactor before it could cause harm.
在反应器中受污染的催化剂被移除以避免造成伤害。