millions of cattle 为什么million加s cattle 不加

millions of cattle 为什么million加s cattle 不加 200 head cattle ,200 head of cattle ,200 head cattles,200 heads of cattle? 关于cattle 这个单词是“three heads of cattle”还是three head of cattle? cattle问题cattle是一个怎么样的词?按照常理来说.如10 cups of milk.数词为复数时,量词cup也应该是复数啊.为什么是10 head of cattle.head不加s? handreds of millions of hunderds of millions of millions and millions of的中文意思 English is spoken by____people.million millions millions of many millions millions and million是什么意思是millions and millions of 英语millions of millions of people是什么意思 millions of与million millions of(翻译) several millions of millions of的意思 millions of 的意思 millions of 的用法 millions of thanks是什么意思