extra pay奖励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extra-high temperature oxidation特高温氧化extracorporeal irradiation of blood血液的体外照射