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词汇 alumina
释义

alumina

noun
/əˈluːmɪnə/
/əˈluːmɪnə/
[uncountable] (specialist)
  1. a white substance found in many types of rock, especially clay矾土
    词源late 18th cent.: from Latin alumen, alumin- related to aluta ‘a kind of leather’, on the pattern of words such as magnesia.
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