单词：burs
音标：[bə:z] ；
n. （多）刺果, （刺果般的）粘附物, 牙钻( bur的名词复数 )
n seed vessel having hooks or prickles
n small bit used in dentistry or surgery
v remove the burrs from
n small bit used in dentistry or surgery
v remove the burrs from
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