authoritative adj.①有权力的;有权威的;可相信的;可靠的:an authoritative person权威人士/an authoritative report可靠的报告②权威的,官方的,当局的: authoritative information,官方消息③显示权力的;好像显示权威的:David speaks in an authoritative tone,大卫以命令的口吻说话。 ‖authoritatively adv.可靠地;权威地/authoritativeness n.可靠;权威 authority n.①(U)权力,职权: abuse authority滥用职权/assume authority掌权/A policeman has the authority to arrest lawbreakers.警察有权逮捕犯法的人。/He has the authority for handling this matter.他有权力处理这件事。②(C)官方,当局:local authorities市政当局/The local authorities decided to build a suspension bridge over the river.该地区政府决定在这条河上建一座吊桥。③(C)权威,专家: absolute authority绝对权威/A good dictionary is an authority on the meanings of words.一本好词典是词义的权威。 用法 authority可接动词不定式,表示“具备做出某种决定的权力”,也可接for+v—ing,其意义与接动词不定式相同。 authorize,—ise vt.授权,批准;委托:authorize a payment批准付款/The government authorized an irrigation project.政府批准了一项灌溉工程。/We are authorized to receive contributions for the Red Cross.我们受托接受给红十字会的捐助。 auto n.(pl.autos)(C)(美>汽车:by auto乘汽车/drive an,auto开汽车/auto industry汽车工业/Don’t park your auto here.别把你的汽车停在这儿。‖auto—fleet n.汽车队/automaker n.汽车制造商/ auto plant汽车工厂 用法 auto是au tomobile的缩写形式。 autobiography n.①(C)自传②(U)自传文学‖autobiographical adj.自传的,自传体的/autobiographically adv.自传地,自传体地 automate vt.,vi.(使)自动化‖ automated adj,自动化的automatic adj.①自动的:automatic control system自动控制系统/automatic feeder自动供给装置/automatic pump自动抽水泵/automatic telephone自动电话/automatic washin,g machine自动洗衣机/The movements of machines are completely automatic,you only need to start and stop the machines.运行是完全自动的,你只需开关机器就行了。②不假思索的,无意识的:A boy who has good man,ners stands up in an automatic movemen,t when a lady enters the room.一个有礼貌的孩子,在一个女士进入房间时,便会不假思索地站起来。/Breathin,g is automatic,呼吸是无意识的。③必然发生的:You will get an automatic increase in pay every year.你每年一定有一次加薪。n.(C)能自动运转的机器或器械‖automatically adv.自动地;不假思索地/automaticity n.自动化;机械性。