为什么material能复数而information不能复数

    以下是其英语释义，一看便知： materialn。（名词） 1。The substance or substances out of which a thing is or can be made。
   材料，原料：事物用或能用其制造的物质 Something, such as an idea or information, that is to be refined and made or incorporated into a finished effort: 素材，材料：将被提炼制造或组合成一个完成的作品的某物，如一个主意或信息： material for a comedy。
     喜剧的素材 materials Tools or apparatus for the performance of a given task: materials 用具、设备：行使某一给定任务的工具或设备： writing materials。
   书写工具 Yard goods or cloth。   布，织物，料子 A person who is qualified or suited for a position or activity: 适当人选：有资格于或适合于某一职位或活动的人： The members of the board felt that she was vice-presidential material。
     董事会成员认为她是个当副总裁的人才 information: f。(名词)缩写inf。Knowledge derived from study, experience, or instruction。
   知识：从学习、经验或指导中得到的知识 Knowledge of a specific event or situation; intelligence。  See Synonyms at knowledge 信息：有关某个事件或情况的知识；情报参见 knowledge A collection of facts or data: 信息：事实或数据的汇总： statistical information。
   统计信息 The act of informing or the condition of being informed; communication of knowledge: 通知：告诉的动作或被告诉的状况；知识的交流： Safety instructions are provided for the information of our passengers。
     安全方面的行为规则被告诉给了乘客 Computer Science A nonaccidental signal or character used as an input to a computer or communications system。
   【计算机科学】 信息：一个非偶然的信号或字符，它被输入一台电脑或信息系统 A numerical measure of the uncertainty of an experimental outcome。
     数据：对试验结果的不确定性的数据测量 Law A formal accusation of a crime made by a public officer rather than by grand jury indictment。
   【法律】 控告：一项正式的犯罪指控，由一位公共官员而非陪审团提出 。  。