burring
  毛口磨光; 去毛刺; 去毛口
  burring
  模糊不清
  Burr v. i. [imp. & p. p. Burred p. pr. & vb. n. Burring.] To speak with burr; to make a hoarse or guttural murmur.
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  bur
       n 1: seed vessel having hooks or prickles [syn: burr]
       2: small bit used in dentistry or surgery [syn: burr]
       v : remove the burrs from [syn: burr]
       [also: burring, burred]