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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
loathe
loathing
loathsome
loaves
lob
lobby
lobbying
lobbyist
lobe
lobotomize
lobotomy
lobster
lobsterman
lobster pot
local
lo-cal
local area network
local call
local color
locale
local government
local historian
local history
locality
localization
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更新时间:2025/7/24 9:13:16