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unclean (adj.)
[unclean 词源字典]
Old English
unclæne
, "morally impure, defiled, unfit for food," from
un-
(1) "not" +
clean
(adj.). Literal sense of "dirty" is recorded from mid-13c.
[unclean etymology, unclean origin, 英语词源]
[unclean 词源字典]