extration摘出术, 拔出, 浸出extraadj.额外的n.额外之物；临时演员adv.特别地Extra Effect by Critical Hitextra-sintering phenomenon额外烧结现象,同化烧结现象extra-marital relationship婚外关系extra cortical axial aplasia皮质外轴索再生障碍[症]extra-high tension circuit超高压电路extrahepatic biliary atresia肝外胆管闭锁extraterrestrial inteligence地外智慧extraterrestrial life system外层空间生命系统extramarital sexual relation婚外性行为extra-abdominal monitoring腹壁外监护