He has received extensive corrective surgery to his skull.他的头骨做过大面积的矫形手术。This type of surgery could even be used to extract cancerous growths.这种外科手术甚至可以用来切除癌性肿瘤。He needed surgery to cure a troublesome back injury.他需要做手术来...
它也用来起强化防腐油的杀菌作用.It has also been used to fortify the fungicidal action of creosote.锌盐和防腐油的混合物也已广泛地被采用.Combinations of zinc salts and creosote have also been widely employed.硫酸铜具有防腐性,这是不曾有过问题的.The antiseptic properties of...