简介：matter是一个常用词。它既可以用作名词，又可以用作动词，还可以构成一些短语和习语。现将其有关用法归纳如下：

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简介：What’sthematter？意为“怎么啦？”。它一般用于询问某人身体是否不舒服、遇到了什么麻烦或东西是否坏了等情景。表示对某人或某事的关心。大家先请看一下Mike与Jane之间的对话吧。

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简介：Weobservedthecharacteristicsofwhitematterfibersandgraymatterinmultiplesclerosispatients,toidentifychangesindiffusiontensorimagingfractionalanisotropyvaluesfollowingwhitematterfiberinjury.Weanalyzedthecorrelationbetweenfractionalanisotropyvaluesandchangesinwhole-braingraymattervolume.Theparticipantsincluded20patientswithrelapsing-remittingmultiplesclerosisand20healthyvolunteersascontrols.Allsubjectsunderwentheadmagneticresonanceimaginganddiffusiontensorimaging.Ourresultsrevealedthatfractionalanisotropyvaluesdecreasedandgraymattervolumeswerereducedinthegenuandspleniumofcorpuscallosum,leftanteriorthalamicradiation,hippocampus,uncinatefasciculus,rightcorticospinaltract,bilateralcingulategyri,andinferiorlongitudinalfasciculusinmultiplesclerosispatients.Graymattervolumesweresignificantlydifferentbetweenthetwogroupsintherightfrontallobe(superiorfrontal,middlefrontal,precentral,andorbitalgyri),rightparietallobe(postcentralandinferiorparietalgyri),righttemporallobe(caudatenucleus),rightoccipitallobe(middleoccipitalgyrus),rightinsula,rightparahippocampalgyrus,andleftcingulategyrus.Thevoxelsizesofatrophicgraymatterpositivelycorrelatedwithfractionalanisotropyvaluesinwhitematterassociationfibersinthepatientgroup.Thesefindingssuggestthatwhitematterfiberbundlesareextensivelyinjuredinmultiplesclerosispatients.Themainareasofgraymatteratrophyinmultiplesclerosisarethefrontallobe,parietallobe,caudatenucleus,parahippocampalgyrus,andcingulategyrus.Graymatteratrophyisstronglyassociatedwithwhitematterinjuryinmultiplesclerosispatients,particularlywithinjurytoassociationfibers.

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简介：matter是英文中一个积极词汇，搭配能力较强，释义灵活。其用法有名词和动词之分，现细说如下：一、用作名词1．作“事情，问题”解，相当于“affair，topic”，此时往往是可数名词。

简介：matter既可以用作名词，又可以用作动词。现将它的用法归纳如下，供同学们学习时参考。

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简介：Inrecentdevelopmentsinchemistryandgeneticengineering,thehumbleresearcherdealingwiththeoriginoflifefindsher(him)selfinagreyareaoftacklingsomethingthatevendoesnotyethaveacleardefinitionagreedupon.Aseriesofchemicalstepsisdescribedtobeconsideredasthelife-nonlifetransition,ifoneadherestotheminimalisticdefinition:lifeisself-reproductionwithvariations.ThefullyartificialRNAsystemchosenfortheexplorationcorrespondssequence-wisetothereconstructedinitialtripletrepeats,presumablycorrespondingtotheearliestprotein-codingmolecules.Thedemonstratedoccurrenceofthemismatches(variations)inotherwisecomplementarysyntheses("self-reproduction"),inthisRNAsystem,opensanexperimentalandconceptualperspectivetoexploretheoriginoflife(anditsdefinition),ontheapparentedgeoftheorigin.

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简介：重点词汇1.mattern.问题;事情What’sthematter?=What’sthetrouble?=What’swrong?怎么了?出什么事了?用于询问某人有什么病或某人遇到什么麻烦、问题。其后跟询问对象时,与介词with连用。What’sthematterwithyou?你怎么了?2.liev.(lay)躺;平躺lie是动词,意为'躺',过去式和过去分词分别为lay和lain,现在分词为lying。Ifoundhewaslyingontheground.我发现他躺在地上。lie还有'位于'的意思。Atempleliesonthetopofthemountain.一座寺庙位于山顶。

简介：重点词汇1.mattern.问题;事情What’sthematter?=What’sthetrouble?=What’swrong?怎么了?出什么事了?用于询问某人有什么病或某人遇到什么麻烦、问题。其后跟询问对象时,与介词with连用。拓展What’sthematterwithyou?你怎么了?2.liev.(lay)躺;平躺lie是动词,意为"躺",过去式和过去分词分别为lay和lain,现在分词为lying。Ifoundhewaslyingontheground.我发现他躺在地上。

简介：Thepaperrepresentsarigoroustreatmentoftheunderlyingquantumtheory,notjustinwordsbutprovidingtheunderlyingtechnicaldetails,astowhymatteroccupiessolargeavolumeanditsintimateconnectionwiththePauliexclusionprinciple,asmoreandmorematterisputtogether,aswellasofthecontractionorshrinkageof'bosonicmatter',uponcollapse,forwhichthePauliexclusionisabolished.Fromthederivedexplicitboundsofintegralsofpowersoftheparticlenumberdensities,explicitboundsonprobabilitiesoftheoccurrencesoftheeventsjustdescribedareextracted.Theseprobabilitiesleadonetoinferthechangeofthe'size'orextensionofsuchmatter,uponexpansionorcontraction,respectively,astheircontentisincreased.

简介：Inthescenariowherethedarkmatter(DM)particlesχχˉpairannihilatethrougharesonanceparticleR,theconstraintfromDMrelicdensitymakesthecorrespondingcrosssectionforDM-nucleielasticscatteringextremelysmall,andcanbebelowtheneutrinobackgroundinducedbythecoherentneutrino-nucleiscattering,whichmakestheDMparticlebeyondthereachoftheconventionalDMdirectdetectionexperiments.WepresentanimprovedanalyticalcalculationoftheDMrelicdensityinthecaseofresonantDMannihilationfors-andp-wavecasesandinvesitgatetheconditionfortheDM-nucleiscatteringcrosssectiontobeabovetheneutrinobackground.WeshowthatinHiggs-portaltypemodels,forDMparticleswiths-waveannihilation,thespin-independentDM-nucleusscatteringcrosssectionisproportionaltoΓR/mR,theratioofthedecaywidthandthemassofR.ForatypicalDMparticlemass～50GeV,theconditionleadstoΓR/mR≥O(10-4).Inp-waveannihilationcase,thespin-independentscatteringcrosssectionisinsensitivetoΓR/mR,andisalwaysabovetheneutrinobackground,aslongastheDMparticleislighterthanthetopquark.TherealsingletDMmodelisdiscussedasaconcreteexample.

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