bump·kin /ˈbʌm(p)kən/
  土包子;鄉下人
  Bump·kin n.  An awkward, heavy country fellow; a clown; a country lout. “Bashful country bumpkins.”
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  bumpkin
       n : not very intelligent or interested in culture [syn: yokel,
            rube, hick, yahoo, hayseed, chawbacon]