趣英语 / burs的意思？

burs的意思？

n.
（多）刺果，（刺果般的）粘附物，牙钻( bur的名词复数 )

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    He picked off the burs that had stuck to his overcoat.他摘下粘在外衣上的刺果.Methods: The root canalroot canal orifice burs and helical drilling bits were prepared in advance.方法: 采用根管口台阶状车针与螺旋型根管钻组合起来扩大根管....