Extracion提取extraadj.额外的n.额外之物；临时演员adv.特别地extracapillary proliferative glomerulonephritis毛细血管外增生性肾小球肾炎Extrapleural pneumonectomy without empyemectomy胸膜外肺切除术不伴脓胸切除术extracellular signal-regulated protein kinase细胞外信号调节激酶extracranio-intracranial arterial anastomosis颅内外动脉吻合(术)extracurricular science and technology creation课外科技创作活动Extravehicular Suit Telemetry and Communications航天器舱外活动服通信装置Extracellular active substance of algae-lysing溶藻活性物质extracurricular teaching and learning activities大学英语第二课堂教学Extraterrestrial Photographic Information Center宇宙照相情报中心Extracellular signal-regulated protein kinases细胞外信号调节激酶1／2