extra tea顶上嫩茶extraadj.额外的n.额外之物；临时演员adv.特别地extra super duralumin alloy超硬铝合金Extracellular lipid droplet细胞外脂滴Extra-articular fractures关节外骨折Extraeurrieular PE exereise课外体育锻炼extra-thick channel steel特厚槽形钢extra galactic radio source银河外射频源extra long-range forecast超长期预报Extracorporeal hemodialysis体外透析extraparenchymal resistance实质外阻抗extramedullary myelopoiesis异位性或髓外骨髓组织生成