杂质
yīngwénjièshì:
  1. n.  alloy
  2. n.  contaminant
  3. n.  crud
  4. n.  heterogeneity
  5. n.  impurity
  6. n.  sifting
  7. n.  foreign substance
  8. n.  contamination
  9. n.  substancepresent in another substance that makes it of poor quality
  10. n.  inpurity
  11.   foreign body
  12.   foreign matter
  13.   impurities
fǎwénjièshì:
  1. n.  impureté