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词汇 alum
释义

alum

noun
/ˈæləm/
/ˈæləm/
[uncountable]
  1. a substance formed from aluminium and another metal, used, for example, to prepare leather and to change the colour of things明矾,白矾(用于制革、印染等)
    词源late Middle English: via Old French from Latin alumen, alumin- related to aluta ‘a kind of leather’.
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