We cannot imagine the life a hundred years from now. 我们没法想象一百年以后的生活。

备注：以上life(生活)为不可数名词，表示抽象含义的泛指意义的生活，所以不加任何冠词。

【1】life（某种方式的）生活不可数名词 (英文解释the activities and experiences that are typical of a particular way of living）

How do you find life in Japan?你觉得日本的生活如何？

It's the people with insecurities who make life difficult.  就是那些没有安全感的人让生活变得问题不断。

【2】life 个人生活；个人经历；个人生活某一方面的活动

可数名词(英文解释a person's experiences during their life; the activities that form a particular part of a person's life)

She has a full social life .她的社交活动非常频繁。

They emigrated to start a new life in Canada.他们移居加拿大，开始了新的生活。

He has had a good life .他一直过着优裕的生活。

My personal life has had to take second place to my career.我的私人生活不得不为事业让路。

Most diabetics have a normal sex life. 绝大多数糖尿病患者有着正常的性生活。