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单词
pentad
释义
pen·tad
\ˈpen.ˌtad\
noun
(
-s
)
Etymology:
Greek
pentad-, pentas,
from
pente
five — more at five
1.
a.
:
a group of five
b.
:
a period of five days
2.
:
a pentavalent element, atom, or radical
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更新时间:2025/11/19 7:30:56