“Cats never fail to fascinate human beings”这句话中的“beings”起什么作

“Cats never fail to fascinate human beings”这句话中的“beings”起什么作 cats never fail to fascinate human beings 英语翻译1.Cats never fail to fascinate human beings.2.I don't kn human beings to program you never fail to fascinate human beings are human beings just human beings!什么意思 human ,human beings 区别 Most cats remain suspicious of human beings all their lives. 求翻译：Cats are suspicious of human beings. Most cats remain suspicious of human beings all their lives Since human beings depend to a great