many of the papers和many papers的区别是什么啊?

Paper和papers的区别是什么 翻译:Many of the papers focus their attention on the controver both papers 和both these papers区别? 英语翻译In big cities there are many types of papers with severa 英语:"paper" 和"papers"有何区别? Make the papers Make the papers some pieces of papers? Many 和many of的用法区别和含义区别 many 与many of区别和用法是什么? plain papers 是什么 many thousands of和many thousand的区别?many hundred和many hundred many of 和most of的区别?