他在法国徒手攀爬的过程中，发现岩面被人为凿过，嵌入并且粘上了仿石头的人工抓手，当时他的后背一阵阵冒冷汗；
He was horrified to find, when free-climbing in France, that holds had been chiselled in the rock face and stone-like grips glued on.
1635年，rifle作为英语单词出现在一条专利中。这是一条在枪膛中刻凿膛线的专利。
In 1635 the word rifle appeared in English in a patent for cutting these grooves in gun barrels.
方法：回顾分析我科分别用涡轮机钻法和凿劈法拔除的524例下颌第三磨牙阻生病例中，出现术中或术后并发症的131例病例。
Methods: 524 cases of impacted mandibular third molars were extracted with air turbine handpiece or chisel, in which 131 cases happened complications during operation or post-operation.
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