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前缀bio、by、bye、centi、co、kilo-考研英语词汇常考词根汇总

bio-:concerning living things
  chemistry—biochemistry
  sphere—biosphere

  by-,bye-:less important
  produce—by-produce
  way—byway

  centi-:hundredth part
  grade—centigrade
  meter—centimeter

  co-:together,with
  author—coauthor
  exist—coexist

  kilo-:thousand
  gram——kilogram
  meter——kilometer