一次 [ㄧ ㄘˋ; yi1 ci4]
  first
  first time
  once
  (math.) linear (of degree one)
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  一次
  いちじ
  adjectival nouns or quasi-adjectives (keiyodoshi)
  noun (common) (futsuumeishi)
  nouns which may take the genitive case particle `no'
  first
  primary
  linear (equation)
  first-order
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