Word · Frequency #17806
radon
氡
核心释义
a radioactive gaseous element produced by the disintegration of radium; the heaviest of the inert gases, considered a health hazard
- 1.
化学元素(符号Rn,曾用Ro),原子序数为86。它是一种无色、无味、化学惰性但具有放射性的稀有气体。
The chemical element (symbol Rn, formerly Ro) with atomic number 86. It is an odorless, colorless, chemically inert but radioactive noble gas.
- 2.
氡-222(22286Rn),该元素最稳定的同位素。
Radon-222 (22286Rn), the most stable isotope of said element.
化学元素(符号Rn,曾用Ro),原子序数为86。它是一种无色、无味、化学惰性但具有放射性的稀有气体。；氡-222(22286Rn),该元素最稳定的同位素。；氡；[化] 氡Rn
用法In use
Because radon is a gas that you cannot see or smell, a special device is needed to detect it.
用法提示：radon 是名词，作主语，表达“氡”这一放射性气体。
Before buying the house, we hired a professional to measure the radon in the basement.
用法提示：radon 是名词，在句中作 measure 的宾语，指“氡”。
The amount of radon in the soil can vary greatly from one area to another.
用法提示：radon 是名词，作 of 的宾语，表示“氡”。
radon occurs naturally in + place
occur 是不及物动词，后接 in 短语表示地点。
Radon occurs naturally in areas over granite.
氡天然存在于花岗岩上方的地区。
be considered a hazard to health
该被动结构后可接名词短语；也可用 to be 进一步说明。
相关词与表达Connections
搭配Collocations
- radon gas
- 氡气
- Radon gas can seep into homes through cracks in the foundation.氡气可以通过地基的裂缝渗入家中。
- radon exposure
- 氡暴露
- Long-term radon exposure is linked to lung cancer.长期接触氡与肺癌有关。
- radon levels
- 氡浓度
- High radon levels have been detected in many basements.许多地下室检测到高浓度的氡。
- radon testing
- 氡检测
- Radon testing is recommended for all new home buyers.建议所有新房购买者进行氡检测。
- radon mitigation
- 氡治理
学习提示Learner notes
记忆技巧Memory Tip
氡是放射性惰性气体，符号Rn，R=Radiation（放射），n=noble（惰性）；它像地下室隐形的'地雷'，需防范。
语境与语域Context & Register
语域：neutral 常见场景：scientific literature、environmental health reports、indoor air quality testing radon 是化学领域的专业名词，多用于科学文献、环境健康报道或室内空气质量检测等较正式语境，日常口语中较少出现。
发音与拼写Pronunciation & Spelling
No common English word rhymes with /ˈreɪdɒn/. 'don' has the same ending but different stress and vowel; 'London' and 'pardon' end in '-don' but are pronounced /dən/. 'random' starts like 'radon' but has /æ/. 'maiden' and 'mason' share the /eɪ/ sound but have different final syllables.
用法优先级Usage priority
Collins 词频等级为 1，建议结合例句记忆，而不是只背中文释义。
Dictionary facts from ECDICT, WIKTIONARY.