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-operating income营业外收入
extra-heat-endurancen.耐超温性
extravasation of scrotum血疝
extra entropy production额外熵产生
Extracellular resistance胞外电阻率
extracellular iodophilia[医] 细胞外嗜碘性
extravehicular spacesuit舱外航天服
extra-low permeability特低渗透
extraterritorial country领事裁判权国家
Extra Bed in Double Room双人间加床