英语词汇trace contaminant简单造句、意思、用法及例句-英语例句辞典

单词	trace contaminant
例句	原声例句 VOA Daily Standard 2018年12月合集 We're trying to apply technologies to reduce odor, and we're trying to deal with the trace contaminants like the pharmaceuticals. 我们正在尝试通过各种技术的应用来减少臭味，而且我们也在竭力应对污染物的问题，比如药物。
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