上行下行速度、覆盖范围和延时是衡量移动通讯网络质量的三大指标，5.5G无疑将在5G基础上大幅提升。Walid Mathlouthi强调说，在移动通信领域5G面向5.5G的发展阶段，频谱将是非常重要的一个方面。超大带宽频谱发放、全上行频谱使用模式等是全球产业链共同关心的话题，需要产业各方共同携手，在网络、生态、业务等各方面深度探讨与协同，促进产业健康、可持续发展。,最强英音练习原文QueensChristmasmessage2019Asachild,Ineverimaginedthatonedayamanwouldwalkonthemoon.Yetthisyearwemarkedthe50thanniversaryofthefamousApollo11mission.AsthosehistoricpictureswerebeamedbacktoEarth,millionsofussattransfixedtoourtelevisionscreens,aswewatchedNeilArmstrongtakingasmallstepformanandagiantleapformankind-and,indeed,forwomankind.Itsareminderforusallthatgiantleapsoftenstartwithsmallsteps.Thisyearwemarkedanotherimportantanniversary:D-Day.On6thJune1944,some156,000British,CanadianandAmericanforceslandedinnorthernFrance.Itwasthelargesteverseaborneinvasionandwasdelayedduetobadweather.Iwellrememberthelookofconcernonmyfathersface.HeknewthesecretD-Dayplansbutcouldofcoursesharethatburdenwithnoone.Forthe75thanniversaryofthatdecisivebattle,inatruespiritofreconciliation,thosewhohadformallybeenswornenemiescametogetherinfriendlycommemorationseithersideoftheChannel,puttingpastdifferencesbehindthem.Suchreconciliationseldomhappensovernight.Ittakespatienceandtimetorebuildtrust,andprogressoftencomesthroughsmallsteps.SincetheendoftheSecondWorldWar,manycharities,groupsandorganisationshaveworkedtopromotepeaceandunityaroundtheworld,bringingtogetherthosewhohavebeenonopposingsides.Bybeingwillingtoputpastdifferencesbehindusandmoveforwardtogether,wehonourthefreedomanddemocracyoncewonforusatsogreatacost.Thechallengesmanypeoplefacetodaymaybedifferenttothoseoncefacedbymygeneration,butIhavebeenstruckbyhownewgenerationshavebroughtasimilarsenseofpurposetoissuesuchasprotectingourenvironmentandourclimate.MyfamilyandIarealsoinspiredbythemenandwomenofouremergencyservicesandarmedforces;andatChristmas,werememberallthoseondutyathomeandabroad,whoarehelpingthoseinneedandkeepingusandourfamiliessafeandsecure.Twohundredyearsonfromthebirthofmygreat,greatgrandmother,QueenVictoria,PrincePhilipandIhavebeendelightedtowelcomeoureighthgreat-grandchildintoourfamily.Ofcourse,attheheartoftheChristmasstoryliesthebirthofachild:aseeminglysmallandinsignificantstepoverlookedbymanyinBethlehem.Butintime,throughhisteachingandbyhisexample,JesusChristwouldshowtheworldhowsmallstepstakeninfaithandinhopecanovercomelong-helddifferencesanddeep-seateddivisionstobringharmonyandunderstanding.Manyofusalreadytrytofollowinhisfootsteps.Thepath,ofcourse,isnotalwayssmooth,andmayattimesthisyearhavefeltquitebumpy,butsmallstepscanmakeaworldofdifference.AsChristmasdawned,churchcongregationsaroundtheworldjoinedinsingingItCameUponTheMidnightClear.Likemanytimelesscarols,itspeaksnotjustofthecomingofJesusChristintoadividedworld,manyyearsago,butalsooftherelevance,eventoday,oftheangelsmessageofpeaceandgoodwill.Itsatimelyreminderofwhatpositivethingscanbeachievedwhenpeoplesetasidepastdifferencesandcometogetherinthespiritoffriendshipandreconciliation.And,aswealllookforwardtothestartofanewdecade,itsworthrememberingthatitisoftenthesmallsteps,notthegiantleaps,thatbringaboutthemostlastingchange.Andso,IwishyouallaveryhappyChristmas.音标来源/LongmanPronunciationDictionaryCambridgeEnglishPronouncingDictionary英音发音要点参加英音正音练习社群。。