方法:椎间盘部分置换的植入物由聚合水凝胶 ( 乙烯醇 ) 组成,并且被做成棒状的形态. Methods . The implants for partial disc replacements were made of poly ( vinyl alcohol ) hydrogel and rod - shaped.
她用笔名艾莉森·库珀写作。She writes under the nom de plume of Alison Cooper.我跑上楼梯，见艾莉森躺在那里。I ran up the stairs and saw Alison lying at the top.我和艾莉森只得从他口中撬出谈话内容。Alison and I had to prize conversation out of him....