extraadj.额外的n.额外之物;临时演员adv.特别地
extracorporeal membrane oxygenator体外膜式氧合器
extravehicular activity space suit舱外航天服
extra low-permeability reservoir特低渗透油藏
Extracurricular center of learning校外学习中心
Extra personnel were brought in.又运进了一批人员。
extracellular matrix/physiology细胞外基质/生理学
extracorporeal liver assist device体外肝脏辅助器械
Extramural margin of rectus mascle腹直肌外缘