活躍 [ㄏㄨㄛˊ ㄩㄝˋ; huo2 yue4]
  active
  lively
  excited
  to enliven
  to brighten up
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  活躍
  かつやく
  noun (common) (futsuumeishi)
  activity (esp. energetic)
  great efforts
  conspicuous service
  noun or participle which takes the aux. verb suru
  to flourish
  to participate actively
  to play an active role
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