高中英语2025届高考词汇讲解系列（释义 例句）（O部，共72个）

高考英语词汇讲解O部1.obviously/ˈɒbviəsli/[释义]Inawaythatiseasilyperceivedorunderstood.[例句]Obviously,studyingimprovesgrades.显然，学习能提高成绩。2.occasion/əˈkeɪʒn/[释义]Aparticulareventortime.[例句]Birthdaysarespecialoccasions.生日是特殊的场合。3.occupation/ˌɒkjuˈpeɪʃn/[释义]（1）Ajoborprofession.（2）Theactofoccupyingaplace.[例句]Teachingisheroccupation.教书是她的职业。4.occupy/ˈɒkjupaɪ/[释义]Tofillortakeupspace/time.[例句]Themeetingoccupiedtheentiremorning.会议占用了整个上午。5.occur/əˈkɜːr/[释义]Tohappenortakeplace.[例句]Accidentsoccurwhenwe’recareless.事故在我们粗心时发生。6.ocean/ˈəʊʃn/[释义]AvastbodyofsaltwatercoveringmostofEarth.[例句]ThePacificOceanisthelargestonEarth.太平洋是地球上最大的海洋。7.o’clock/əˈklɒk/[释义]Usedtospecifythehourwhentellingtime.[例句]Thetrainleavesat3o’clock.火车3点发车。8.October/ɒkˈtəʊbər/[释义]Thetenthmonthoftheyear.[例句]HalloweenisonOctober31st.万圣节在十月31日。9.odd/ɒd/[释义]（1）Strangeorunusual.（2）(Math)Notdivisiblebytwo.[例句]Hisoddbehaviorworriedhisfriends.他古怪的行为让朋友担心。10.of/əv/[释义]Expressingpossession,origin,orrelation.[例句]Thecoloroftheskyisblue.天空的颜色是蓝色。7 11.off/ɒf/[释义]（1）Awayfromaplace.（2）Notoperatingoractive.[例句]Turnoffthelightsbeforeleaving.离开前关掉灯。12.offer/ˈɒfər/[释义]（1）(V.)Topresentsomethingforacceptance.（2）(N.)Aproposalorbid.[例句]Sheofferedtohelpwiththeproject.她主动提出帮忙完成项目。13.office/ˈɒfɪs/[释义]Aroomorbuildingforadministrativework.[例句]Heworksinabusyofficedowntown.他在市中心一间繁忙的办公室工作。14.officer/ˈɒfɪsər/[释义]（1）Apersonholdingapositionofauthority(e.g.,police).（2）Amemberofthearmedforces.[例句]Theofficerdirectedtrafficaftertheaccident.事故后，警官指挥交通。15.official/əˈfɪʃl/[释义]（1）(Adj.)Approvedbyauthority.（2）(N.)Apersoninapositionofauthority.[例句]Theofficialannouncementwillbemadetomorrow.官方公告将于明天发布。16.often/ˈɒfn/[释义]Frequently;manytimes.[例句]Sheoftenvisitshergrandparents.她经常去看望祖父母。17.oil/ɔɪl/[释义]Aviscousliquidusedasfuelorlubricant.[例句]Oliveoilishealthyforcooking.橄榄油对烹饪有益健康。18.OK/əʊˈkeɪ/[释义]（1）(Adj.)Satisfactoryoracceptable.（2）(Exclam.)Agreement.[例句]IsitOKifIborrowyourpen?我借你的笔可以吗？19.old/əʊld/[释义]Havinglivedforalongtime;notyoung.[例句]Theoldtreehasstoodforcenturies.这棵老树已屹立数百年。20.Olympics/əˈlɪmpɪks/[释义]Aninternationalsportseventheldeveryfouryears.7 [例句]AthletestrainforyearstocompeteintheOlympics.运动员为参加奥运会训练多年。21.on/ɒn/[释义]（1）Incontactwithasurface.（2）Operatingorfunctioning.[例句]Thebookisonthetable.书在桌子上。22.once/wʌns/[释义]（1）(Adv.)Ononeoccasion.（2）(Conj.)Assoonas.[例句]Onceyoulearn,youneverforget.一旦学会，就永远不会忘记。23.one/wʌn/[释义]（1）Thenumberafterzero.（2）Referringtoasingleperson/thing.[例句]Onestepatatimeleadstosuccess.一步一个脚印走向成功。24.onion/ˈʌnjən/[释义]Aroundvegetablewithlayersandastrongsmell.[例句]Shechoppedtheonionandstartedcooking.她切了洋葱开始做饭。25.online/ˌɒnˈlaɪn/[释义]Connectedtooravailableviatheinternet.[例句]Sheshopsonlineforconvenience.她为方便在网上购物。26.only/ˈəʊnli/[释义]（1）(Adj.)Sole;nooneornothingelse.（2）(Adv.)Nomorethan.[例句]Thisistheonlycopyleft.这是唯一剩下的副本。27.onto/ˈɒntuː/[释义]Movingtoapositionontopofsomething.[例句]Thecatjumpedontothesofa.猫跳上了沙发。28.open/ˈəʊpən/[释义]（1）(Adj.)Notclosedorblocked.（2）(V.)Tomovesomethingtoallowaccess.[例句]Thestoreisopenfrom9AMto5PM.商店从上午9点到下午5点营业。29.opera/ˈɒprə/[释义]Adramaticartformcombiningmusicandtheater.[例句]Theyattendedanoperaatthegrandtheater.他们在大剧院观看了一场歌剧。7 30.operation/ˌɒpəˈreɪʃn/[释义]（1）Theactoffunctioningorworking.（2）Asurgicalprocedure.[例句]Thefactoryresumedoperationafterrepairs.工厂维修后恢复运营。31.operator/ˈɒpəreɪtə/n.操作员；经营者（apersonwhocontrolsequipment/abusiness）Skilledoperatorsensuremachinesrunsmoothlyandsafely.熟练的操作员确保机器安全平稳运行。32.opinion/əˈpɪnjən/n.观点（apersonalbelieforjudgment）Respectothers’opinionswhilestandingbyyourownvalues.尊重他人观点，同时坚守自己的价值观。33.opponent/əˈpəʊnənt/n.对手（apersonwhocompetesagainstanother）Astrongopponentpushesyoutobecomebetter.强大的对手促使你进步。34.opportunity/ˌɒpəˈtjuːnəti/n.机会（afavorablemomentforaction）Everychallengeisanopportunityindisguise.每个挑战都是伪装的机会。35.oppose/əˈpəʊz/v.反对（toresistordisagreewithsomething）Opposeinjusticewithcourageandreason.用勇气和理性对抗不公。36.opposite/ˈɒpəzɪt/adj.相反的;n.对立物（completelydifferent;counterpart）Oppositeviewscanleadtobalancedsolutions.相反的观点能促成平衡的解决方案。37.optimistic/ˌɒptɪˈmɪstɪk/adj.乐观的（hopefulaboutthefuture）Anoptimisticattitudeturnsobstaclesintosteppingstones.乐观的态度将障碍变为垫脚石。38.option/ˈɒpʃən/n.选择（apossiblechoice）Whenonedoorcloses,otheroptionswillopen.一扇门关闭时，其他选择会打开。39.or/ɔː/conj.或者；否则（usedtolinkalternatives）Dreambigoryou’llneverdiscoveryourpotential.敢于梦想，否则你永远无法发现自己的潜力。40.orange/ˈɒrɪndʒ/n.橙子；橙色;adj.橙色的（fruit/color）Anorangeadaykeepsthedoctoraway,justlikelaughter!一天一橙，医生远离，快乐亦然！41.orbit/ˈɔːbɪt/n.轨道;v.绕轨道运行（thepathofacelestialbody）7 Satellitesinorbitconnecttheworldwithtechnology.轨道上的卫星用科技连接世界。42.order/ˈɔːdə/n.顺序；命令;v.命令（arrangement;directive）Apeacefulsocietythrivesonjusticeandorder.公正与秩序让社会繁荣。43.ordinary/ˈɔːdnri/adj.普通的（notspecialorunusual）Ordinarypeoplecanachieveextraordinarythings.平凡人也能成就不凡。44.organ/ˈɔːɡən/n.器官；风琴（bodypart/musicalinstrument）Healthyorgansarethefoundationofavibrantlife.健康的器官是活力人生的基础。45.organic/ɔːˈɡænɪk/adj.有机的；自然的（grownwithoutchemicals）Organicfarmingprotectsbothhealthandtheplanet.有机农业守护健康与地球。46.organisation(organization)/ˌɔːɡənaɪˈzeɪʃən/n.组织（astructuredgroupwithapurpose）Strongorganisationsempowerindividualstocreatechange.强大的组织赋予个人改变的力量。47.origin/ˈɒrɪdʒɪn/n.起源（thestartingpointofsomething）Understandingyouroriginhelpsshapeyourfuture.了解起源，方能塑造未来。48.original/əˈrɪdʒənl/adj.原始的；独创的（firstofitskind;creative）Originalideasoftensparkrevolutions.独创的想法常引发变革。49.other/ˈʌðə/adj.其他的;pron.另一个（differentfromtheonementioned）Helpotherswithoutexpectinganythinginreturn.助人不求回报。50.otherwise/ˈʌðəwaɪz/adv.否则；在其他方面（underdifferentcircumstances）Plancarefully,otherwiseeffortsmaygotowaste.周密计划，否则努力可能白费。51.oughtto/ˈɔːttə/modalv.应该（usedtoindicatedutyorcorrectness）Weoughttoprotectnatureforfuturegenerations.我们应为后代保护自然。52.our/ˈaʊə/poss.adj.我们的（belongingtous）Ourplanet’sbeautydependsoncollectivecare.地球之美依赖共同守护。53.ours/ˈaʊəz/poss.pron.我们的（belongingtous）7 Thefutureisourstoshapewithresponsibility.未来由我们负责任地塑造。54.ourselves/aʊəˈselvz/pron.我们自己（reflexiveformof"we"）Wemustbelieveinourselvestoovercomechallenges.相信自己，方能战胜挑战。55.out/aʊt/adv.在外；熄灭（notinside;nolongerburning）Stepoutofyourcomfortzonetogrow.走出舒适区，方能成长。56.outcome/ˈaʊtkʌm/n.结果（thefinaleffectofanaction）Positiveeffortsleadtofavorableoutcomes.积极努力带来好结果。57.outgoing/ˈaʊtɡəʊɪŋ/adj.外向的（friendlyandsociable）Outgoingpeoplespreadjoywherevertheygo.外向的人走到哪里都传播快乐。58.outline/ˈaʊtlaɪn/n.大纲;v.概述（asummary;tosketch）Aclearoutlineturnschaosintoclarity.清晰的提纲化混乱为有序。59.output/ˈaʊtpʊt/n.输出；产量（theamountproduced）Efficientinputleadstogreateroutput.高效投入带来更大产出。60.outside/ˌaʊtˈsaɪd/n.外部;adj.外部的（theouterside）Natureoutsidehealsthemindwithin.户外自然治愈内心。61.outstanding/aʊtˈstændɪŋ/adj.杰出的（exceptionallygood）Outstandingachievementsstartwithsmallsteps.杰出成就始于微小步伐。62.over/ˈəʊvə/prep.在…之上；超过（above;morethan）Persistoverdifficultiestoreachsuccess.坚持跨越困难，终达成功。63.overall/ˌəʊvərˈɔːl/adj.总体的;adv.总体上（consideringeverything）Overallprogressmattersmorethantemporarysetbacks.总体进步比暂时挫折更重要。64.overcome/ˌəʊvəˈkʌm/v.克服（tosuccessfullydealwithaproblem）Youcanovercomeanyobstaclewithdetermination.有决心就能克服任何障碍。65.overseas/ˌəʊvəˈsiːz/adv./adj.海外（inaforeigncountry）7 Overseasexperiencesbroadenyourperspective.海外经历开阔视野。66.owe/əʊ/v.欠；归功于（tobeobligatedtopay/give）Weoweoursuccesstothosewhosupportedus.成功归功于支持我们的人。67.own/əʊn/adj.自己的;v.拥有（belongingtooneself;topossess）Takeownershipofyouractionsandgrow.对自己的行为负责，方能成长。68.oxygen/ˈɒksɪdʒən/n.氧气（alife-sustaininggas）Treesgiveusoxygen—let’sprotectthem.树木提供氧气，请保护它们。69.object/ˈɒbdʒɪkt/[释义]（1）(N.)Amaterialthing.（2）(V.)Toexpressdisapproval.[例句]Thestrangeobjectturnedouttobeatoy.那个奇怪的物体原来是个玩具。70.objective/əbˈdʒektɪv/[释义]（1）(N.)Agoaloraim.（2）(Adj.)Notinfluencedbypersonalfeelings.[例句]Theteam’sobjectiveistowinthechampionship.团队的目标是赢得冠军。71.observe/əbˈzɜːv/[释义]Towatchcarefully;toremark.[例句]Scientistsobservethebehaviorofanimals.科学家观察动物的行为。72.obtain/əbˈteɪn/[释义]Togetoracquiresomething.[例句]Youneedapermittoobtainapassport.你需要许可证才能获得护照。7