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单词
radon
释义
radon
1 ENTRIES FOUND:
radon
(noun)
radon
/
ˈ
reɪˌdɑːn/
noun
radon
/
ˈ
reɪˌdɑːn/
noun
Learner's definition of RADON
[
noncount
]
:
a radioactive element which is a gas that is used medically in cancer treatments
氡
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更新时间:2026/9/3 7:59:40