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单词
optionality
释义
WordReference Random House Unabridged Dictionary of American English © 2024
op•tion•al
(op
′
shə nl),
USA pronunciation
adj.
left to one's choice;
not required or mandatory:
Formal dress is optional.
leaving something to choice.
option
+ -
al
1
1755–65
op′tion•al
′
i•ty
,
n.
op
′
tion•al•ly
,
adv.
1.
See corresponding entry in Unabridged
.
discretional, elective, voluntary.
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obnounce
obnoxious
obnoxiously
obnoxiousness
obnubilate
obnubilation
oboe
oboe d'amore
oboe d'amour
oboist
obol
obole
obolus
obote
obovate
obovoid
o'boyle
obpyriform
obrecht
obregón
obrenovich
obrenović
obreption
obreptitiously
o'brien
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更新时间:2026/8/21 7:05:39