语言消亡 meaning in Chinese

language death

They know that when a language is lost , the culture and much of the knowledge of the native community may be lost with it
他们知道当一种语言消亡时，那当地社会的文明和许多知识也会随之消失。
It comes into being and develops with the rise and development of society . it dies when society dies . apart from society there is no language
语言随着社会的出现而产生,随着社会的进步而发展.社会灭亡之时,正是语言消亡之日.离开了社会,语言就不复存在