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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
nymphomaniac
NYSE
N.Z.
née
négritude
O
o'
oaf
oafish
Oahu
oak
oaken
Oakley, Annie
oakum
oar
oarlock
oarsman
oarswoman
OAS
oasis
oath
oath of office
oatmeal
oats
Obadiah
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更新时间:2024/12/22 23:04:38