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单词
ketene
释义
ketene
/ˈkiːtiːn/
noun
mass noun
1
Chemistry
a pungent colourless reactive gas, used as an intermediate in chemical synthesis
【化】乙烯酮。
1.1
Chem. formula: CH
2
=C=O.
化学分子式:CH
2
=C=O.
1.2
count noun
any substituted derivative of this
烯酮类。
词源
early 20th cent.: from
KETONE
+
-ENE
.
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run away with
run before one can walk
runcible spoon
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rundown
run dry
rune
runes
rune stone
run-flat
run for it
run foul of
rung
runged
rungless
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runic
run-in
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更新时间:2026/4/28 10:24:21