built-in contaminants
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美
- 内含的杂质
双语例句
- Active carbon adsorbs poisonous gases and impurities in liquids.
活性炭吸附毒气和液体中的杂质。 - The oxygen reacts vigorously with the impurity in the iron.
氧气与铁中的杂质发生剧烈的化学反应。
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