Methods: The technique of serum free cultivation and the methods of immunofluorescence cytochemistry were used.方法利用无血清培养技术和细胞免疫化学方法.Methods Single and double staining immunofluorescence techniques were used.方法采用免疫荧光单标记法和...
一天，一艘更大的船泊在了近岸处。One day a larger ship anchored offshore.近岸回流的冲力能把游泳的人涌到海里.The pull of the undertow can drag swimmers out to sea.近岸停泊的那艘船将于明日起航.The ship riding close to shore will set sail tomorrow....