radon
美['reɪdɑːn] 英['reɪdɒn]
n. 氡
英英释义
Noun- a radioactive gaseous element formed by the disintegration of radium; the heaviest of the inert gasses; occurs naturally (especially in areas over granite) and is considered a hazard to health
例句
用作名词(n.)- Radon is the daughter of radium.氡是镭的子体。
- Where does the indoor radon come from?室内氡气是从哪里而来?
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