英语词汇trace element怎么读，是什么意思，单词翻译、读音、固定搭配用法和短语词组及例句-英汉双解词典

单词	trace element
释义	trace element noun [ C ] uk/ˈtreɪs ˌel.ɪ.mənt/ us/ˈtreɪs ˌel.ɪ.mənt/ 微量元素 one of several types of simple chemical substance that are necessary for healthy growth and development, and exist in animals and plants in very small amounts
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