extraboldn.特黑体字adj.用特黑体字排印的
extraadj.额外的n.额外之物;临时演员adv.特别地
extra vascular hemolysis血管外溶血
extra-nuclear particle核外粒子
extrahepatic cholestasis肝外梗阻
Extracranial meningiomas颅外脑膜瘤
extra weather resistance超耐候
extra adulterating agent外掺剂
extra-refractive index[电] 非常拆射率
extra-low carbon steel极低碳素钢
extramaxillary anchorage颌外安抗
extrahepatic cholangioma肝外胆管瘤