英语词汇“radon”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	radon
释义	radonradon /ˈreɪdɑn/ noun [uncountable] (symbol Rn) Etymology ETYMOLOGYradon Origin: 1900-2000 radium science, chemistry a radioactive gas that is an element and that can be dangerous in large amounts
随便看	self-possessed self-possession self-preservation self-proclaimed self-regulation self-regulatory self-reliance self-reliant self-respect self-respecting self-restraint self-righteous self-righteously self-righteousness self-rising flour self-rule self-sacrifice self-sacrificing selfsame self-satisfaction self-satisfied self-seeking self-service self-serving self-starter

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