英语词汇“trace element”的英英意思、用法、释义、翻译、读音、例句、短语、词组-英语词典

单词	trace element
释义	trace element Word forms: trace elements 1. countable noun A trace element is a chemical element such as iron or zinc that occurs in very small amounts in living things and is necessary for normal growth and development. 2. countable noun A trace element is a very small amount of a chemical element that is found in a metal or other substance.
随便看	closed session closed shop closed society closed space closed store closed window close election close encounter close examination close family close-fitting close friend close friendship close in close indefinitely close in for the kill close inspection close-knit close-knit circle close-knit community close-knit family close-knit group close-knit team close link close look

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