地球是人类唯一的家the earth is humans' only home,用humans'还是 human‘s?

地球是人类唯一的家the earth is humans' only home,用humans'还是 human‘s? human的复数是humen 还是humans The universe,the earth is only part of the humans,Earth is a human humans的区别 humans是human的复数么? humans'和human's有什么不同 human的复数是什么?humans or humen? human beings humans区别? Humans can only live on the Earth because of the diversity o The time is approaching _______ humans on the earth will ben “What is the total population of humans?”的中文翻译. China is the third country humans into Earth orbit after Rus