防煙
  ぼうえん
  noun (common) (futsuumeishi)
  nouns which may take the genitive case particle `no'
  protection from smoke
  anti-smoke
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  望遠
  ぼうえん
  noun (common) (futsuumeishi)
  seeing at a distance
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  防炎
  ぼうえん
  noun (common) (futsuumeishi)
  fire prevention
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