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单词
radon
释义
radon
ra
don
/
ˈreɪdɑn
/
noun
[uncountable]
(
symbol
Rn
)
Etymology
ETYMOLOGY
radon
Origin:
1900-2000
radium
science
,
chemistry
a
radioactive
gas that is an
element
and that can be dangerous in large amounts
随便看
psoriasis
psst
PST
psych-
psych
psyche
psyched
psychedelic
psychiatric
psychiatric hospital
psychiatrist
psychiatry
psychic
psychically
psycho
psycho-
psychoactive
psychoanalysis
psychoanalyst
psychoanalytic
psychoanalytically
psychoanalyze
psychobabble
psychobiology
psychodrama
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更新时间:2025/11/17 0:55:08