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stra·tum 英ˈstreɪtəm, ˈstrætəm美ˈstretəm, ˈstrætəmAHDstrāʹtəm, strătʹəm
基本英英词源搭配记法近义反义派生词例句Thesaurus
n.地层⁵⁶;阶层⁴⁴
分类地质自然阶层高贵
Noun:
one of several parallel layers of material arranged one on top of another such as a layer of tissue or cells in an organism or a layer of sedimentary rockpeople having the same social, economic, or educational status;the working class an emerging professional class an abstract place usually conceived as having depth;a good actor communicates on several levels a simile has at least two layers of meaning the mind functions on many strata simultaneously 来自拉丁语stratum，展开物，覆盖，铺盖，道路，中性格于stratus，展开，展开的，铺开的，过去分词格于sternere，展开，铺开，伸展。来自原始印欧语*ster，展开，伸展，词源同strew, street。后用于科学术语指岩层，地层等。 stratum来自拉丁语stratum，展开物，覆盖，铺盖，道路，中性格于stratus，展开，展开的，铺开的，过去分词格于sternere，展开，铺开，伸展。来自原始印欧语*ster，展开，伸展，词源同strew, street。后用于科学术语指岩层，地层等。 stratus来自拉丁语stratus，展开。用于科学术语指层云。 strew来自古英语strewian，布满，散播。来自原始日耳曼语*strawjana，散开，散播。来自原始印欧语*ster，展开，伸出，词源同straw, stratum, structure。 street来自古英语straet，街道，大路。来自原始日耳曼语*strato，街道。来自拉丁语via strata，路面，铺好的路，阴性格于stratus，展开的，铺开的，过去分词格于sternere，展开，铺开，词源同stratum, structure。aqueous stratum蓄水层inverted stratum层倒转confining stratum不透水层,隔水层…interbedded stratum夹层surface stratum表层impervious stratum不渗透地层field stratum地面植被层watertight stratum土壤不透水层…permeable stratum透水层,透水岩层…stratum Malpighii马耳皮基氏层, …privileged stratum特殊阶层subsurface stratum亚表层underlying stratum下伏岩层
钱博士strat层，伸展之物+um名词后缀→层状物⇒岩层，地层；社会阶层
词根stern-伸展，铺开来自拉丁语，常见变体形式stra-，过去分词形式为strat-，常转做名词词根，表示“层，伸展之物”。它和拉丁词根stru-/struct-构造，码放同源，最终都原始印欧语词根*stere-伸展。GRE红宝书status 地位，是相对于社会阶层来说的；street + 音：土木，街道的土木结构是一层层的strat层，伸展之物+um名词后缀→层状物⇒岩层，地层；社会阶层。词根记忆strat层+um场所→人们分出层次的场所→社会阶层近义词 bed床layer层vein静脉band乐队level数量class等级branch分部section部分division划分echelon职权的等级social class社会地位
Psuperstratumn.上层Punderstratumn.底层Psubstratumn.基础根据下层基层基质培养基胶层
名词100%
用作名词They represent each societystratum.他们代表各个社会阶层。
Such inequalities are found in everystratum.这类不公平的现象存在于社会的每一个阶层。noun.layer
同义词 bed,gradation,grade,lamina,level,lode,seam,sheet,stratification,thickness,vein
castenoun social class
cultural level,degree,estate,grade,lineage,order,position,race,rank,social order,species,sphere,standing,station,status
classnoun societal group, background
ancestry,birth,bourgeoisie,breed,caliber,caste,circle,clan,clique,club,company,condition,connection,coterie,cultural level,degree,derivation,descent,estate,extraction,family,genealogy,grade,hierarchy,influence,intelligentsia,league,lineage,moiety,nobility,origin,pecking order,pedigree,pigeonhole,place,position,prestige,quality,sect,social rank,source,sphere,standing,state,station,status,stock,strain,stratum,the right stuff,tier,title
classesnoun societal group, background
ancestries,births,bourgeoisies,breeds,calibers,castes,circles,clans,cliques,clubs,companies,conditions,connections,coteries,cultural levels,degrees,derivations,descents,estates,extractions,families,genealogies,grades,hierarchies,influences,intelligentsia,leagues,lineages,moieties,nobilities,origins,pecking orders,pedigrees,pigeonholes,places,positions,prestige,qualities,sects,social ranks,sources,spheres,standings,states,stations,statuses,stocks,strains,strata,the right stuffs,tiers,titles
estatenoun class, rank
bracket,caste,category,classification,condition,echelon,footing,form,grade,level,lot,order,period,place,position,quality,repair,shape,situation,sphere,standing,state,station,status,stratum
layernoun coating, tier
band,bed,blanket,coat,coping,couch,course,cover,covering,film,flag,flap,floor,fold,girdle,lamina,lamination,lap,mantle,overlap,overlay,panel,ply,row,seam,sheet,slab,story,stratum,stripe,substratum,thickness,zone
layersnoun coating, tier
bands,beds,blankets,coats,copings,couches,courses,coverings,covers,films,flags,flaps,floors,folds,girdles,lamens,laminations,laps,mantles,overlaps,overlays,panels,ply,rows,seams,sheets,slabs,stories,strata,stripes,substrata,thicknesses,zones |