玉石 [ㄩˋ ㄕˊ; yu4 shi2]
  precious stones
  jade and stone
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  玉石
  ぎょくせき
  noun (common) (futsuumeishi)
  gems and stones
  wheat and chaff
  wheat and tares
  good and bad
  玉石
  たまいし
  noun (common) (futsuumeishi)
  pebble
  round stone
  boulder
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