First ald急救firstadj.第一的；最初的adv.首先；第一n.最初；(序数词)第一First Field Army Advisory Team驻第一集团军顾问组First order transport equation一阶传递方程First U.S. Slave Rebellion第一次美国奴隶起义(1800)first order predicate calculus一阶谓词演算first-derivative reflectance一阶导数反射率First United States Army Group美第一集团军群First nursery rhyme in Chinese第一首汉语儿歌First Available Transportation首次提供运输first cable later beam dynasty先缆后梁first dorsal metatarsal artery第一跖骨背动脉