必須 [ㄅㄧˋ ㄒㄩ; bi4 xu1]
  to have to
  must
  compulsory
  necessarily
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  必須
  ひっす
  ひっしゅ
  ひっすう
  nouns which may take the genitive case particle `no'
  adjectival nouns or quasi-adjectives (keiyodoshi)
  noun (common) (futsuumeishi)
  indispensable
  required
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