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词汇
carbon monoxide
词根词缀
词源:
1873, so called because it consists of one
carbon
and one
oxygen
atom (as opposed to
carbon dioxide
, which has two of the latter).
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umbrage
umbrageous
umbrella
umiak
umlaut
umma
umpire
umpty
U.N.
un-
unabashed
unabated
unable
unabridged
unacceptable
unaccompanied
unaccountable
unaccustomed
unacquainted
unadorned
unaffected
unafraid
unaided
unalloyed
unaltered
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更新时间:2026/6/7 0:29:44