深耕 [ㄕㄣ ㄍㄥ; shen1 geng1]
  deep plowing
  thorough penetration
  thorough development (of a market segment etc)
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  深耕
  しんこう
  noun (common) (futsuumeishi)
  noun or participle which takes the aux. verb suru
  deep plowing
  deep ploughing
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