phenomena 和phenomenon那一个是复数形式?

During the dryperiods that are common phenomena along the desert margins,though,the pressure on the land is often far in excess of its diminished capacity,and desertification results.麻烦翻译一下

英语翻译
The various textual phenomena in which structural features of the language used are exploited in order to bring about a communicatively significant confrontation of two linguistic structures with more or less similar forms and more or less different meaning

英语翻译
1.2.1The phenomena of aggregation
Aggregation is a pervasive phenomenon.A the most basic level,an aggregation is a collection of parts or units which form some coherent,often cohesive,whole.Molecules aggregate to form the basic building blocks of matter and substance as we know them.Inanimate objects of all shapes and sizes aggregate to form the familiar landscape within which we live.Beaches are made of aggregations of sand grains or cobblestones,glaciers are made up of compacted aggregations of snowflakes,planets are aggregated into solar systems,and solar systems are aggregated into galaxies.In many cases,inanimate objects are not only aggregated,but sorted along some set of physical gradients.Adjacent sand grains on a beach are apt to be the same size,having been sorted by the physical force of wave action.But beach material is not all the same size.Thus,a beach contains a gradient of grain sizes instead of a random assemblage of sand,pea gravel,and cobble.Furthermore,the sand on a given beach is likely to be predominantly of a single type.Pink sand beaches in Bermuda are made mostly from coral growing in the adjacent reef,whereas black sand beaches in Hawaii are made from the locally abundant volcanic rock.Both physical sorting and local abundance of source material create nonrandom aggregations which then may be arranged into repetitive patterns.Sand on a dune may be arranged by density any size,but dunes are also repetitively arrayed along a beach.However,aggregation is not only passive sorting.Many objects actively aggregate,such that like materials attract,while foreign materials are repelled.Atoms and molecules are both attracted and repulsed,resulting in cohesion into liquids or solids within which the individual units are held at some minimum distance.
Human societies have all adopted the phenomenon of arranged,or ordered,aggregation as basic to living.We build a brick wall one ordered row at a time instead of haphazard arrangements.Engineers and architects instructs us about the structural and aesthetic properties of ordered arrangements designed to make our surroundings both functional and pleasing to the eye.Many of us sort silverware by type:knives with knives and forks with forks.Commuters in automobiles follow each other in columns determined by the locations of roads and freeways,attracted to their ultimate destinations,but repelled from each other for fear of having an accident (not always successful ).In short,ordered arrangements of like objects surround us comfortably,as a consequence of our actions.

phenomena单复数同行?
语法书上说phenomena是拉丁语，原是复数后来可作为单数，也就是说这个词是单复数同行，但为什么很多人说它是复数而phenomenon是单数

求一些这种变化方式的单词
bacterium 单数,bacteria 复数
phenomenon 单数,phenomena 复数
越多越好,

phenonmenon 和phenomena有什么区别?
我想请教一下phenomenon 和phenomena 的区别,从词典里看上去都一样.

英语好的看看
what accounts for the phenomena,there are,to my mind ,plenty of contributing reasons.这句话有错误吗,能这样写吗?
我就是想把句子整复杂点,考试嘛…就是想知道作文中这样写会被认为语法错误吗

phenomenon的复数形式究竟是phenomena还是phenomenons啊
我在网上看大多数都说是phenomena为啥金山词霸上还是有phenomenons啊,是有特殊语境还是phenomenons不规范啊

关于英语表达的两个问题!
1.什么用phenomenon,什么时候用phenomena ,请列举下例句!
2.在写作文的时候,常要引述自己或他人的例子,请问应该用哪些短语或句子可以作为过渡句呢?

求翻译.速度
The “moon illusion” consists of two phenomena: (1) the moon appears larger than it actually is, and (2) this enlargement is much stronger on the horizon than at the zenith. Generally, any celestial objects near the horizon looks larger than when the same object is high on the sky.
The moon in the neighbouring picture is of “aesthetically correct” size. By placing the mouse over the picture the actual size is seen (pictures from Rock 1984, based on the painting by Honoré Daumier »O Lune! … Inspire-moi ce soir quelque petite pensée…« 1844).
Comment. The moon illusion is usually explained through size constancy, with the necessary additional assumption that the ‘default’ distance for any object is less than the horizon/skyline distance.
Amazingly, when you bend over and look through your legs, the moon illusion is greatly diminished (Coren 1992, Higashiyama & Adachi 2006)! This underscores the influence of context on size constancy.
The painting reminds me of Spitzweg's “Der arme Poet” (1839). With “Poète dans la mansarde” (1842) and “Locataires et Proprietaires: Brigand de proprietaire” (1847) Daumier repeatedly took up this topic.

英语翻译
Although Seebeckobserved thermoelectric phenomena in 1821 and Altenkirch defined the ZT equation in 1911,ittook several decades to develop the first functioning devices in the 1950s and1960s.4 They are now called the firstgeneration thermoelectrics with an average ZT of 1.0,and devices madeof them can operate at 4–6% conversion efficiency.Following several moredecades of stagnancy,new theoretical ideas relating to size effects on thethermoelectric properties in the 1990’s stimulated new experimental researchthat eventually led to significant advances in the following decade.Althoughthe theoretical ideas were originally about predictions on raising the powerfactor,the experimental breakthroughs were achieved by significantlydecreasing the (lattice) thermal conductivity.1,2,5–8 Among a wide variety of research approaches,one hasemerged,which has led to a near doubling of the ZT at high temperaturesand has defined the second generation of bulk thermoelectric materials with ZT in the range of 1.3–1.7.This approach uses nanoscale precipitates and compositional inhomogeneities todramatically suppress the lattice thermal conductivity.1,2,7,9,10 These second generation materials are expected toproduce power generation devices with conversion efficiencies of 11–15%.
非专业翻译，非诚勿扰！

请问：phenomena 与 phenomenon 的区别?
如题~

on the phenomena of the negative transition in the translation 怎么翻译

phenomena和phenomenon有什么联系
有助于回答者给出准确的答案

英语翻译
The phenomena of interpolymer interactions have been the focus of intensive fundamental and applied research on polyelectrolyte complexes (PECs).The PECs prepared from natural polymers such as proteins and polysaccharides have the additional advantage ofbeing non-toxic and bioabsorbable.Protein polyelectrolyte interactions have been concerned widely with biotechnological and biomedical applications such as protein purification,enzyme immobilization,immunosensing and bioactive sensors.Several globular proteins and polyelectrolytes (natural or synthetic) have been matched for various techniques and objectives of investigation.Table l represents some examples of researches on the formation of protein/polysaccharide systems in literature.

英语翻译
原文是：
Formulating the phenomena that information science should explore and the problems information science should solve is of basic significance.It is by establishing the scope of this problem that the precise area of systematic,scientific investigation can be specified and the assumptions governing the activity developed.N.Belkin put it as:“Facilitating the effective communication of desired information between human generator and human user” (Belkin,1977:22) (1)
我翻译的是：
描述信息科学要探索的现象和信息科学要解决问题是最基本的.通过确定这一问题的范围,系统、科学的研究的确切领域可以被确定,而且行为控制的假设可以被发展.N.贝尔把它看为：“促进信息在人类机器和人类用户之间有效的通信” (贝尔,1977:22) (1)
翻译的不通顺,意思好像没有表达清楚,