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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
Spock, Dr. Benjamin
spoil
spoilage
spoiled
spoiler
spoils
spoilsport
spoils system
spoke
spoken
-spoken
spoken-word
spokesman
spokesperson
spokeswoman
spoliation
spondee
sponge
sponge bath
sponge cake
sponger
spongiform
sponginess
spongy
sponsor
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更新时间:2025/3/15 9:17:46