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单词
vicennial
释义
vicennial
adj. lasting for or occurring every twenty years.
Etymology
: LL vicennium period of 20 years f. vicies 20 times f. viginti 20 + annus year
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obscure
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observance
observant
observation
observatory
observe
observer
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obsession
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obsolescent
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更新时间:2025/11/21 22:40:42