You can refer to everyone who will be alive in the future as posterity .
例句
A photographer recorded the scene on video for posterity...摄影师用摄像机为后代记录下了这个场景。Was he making these notes for the benefit of posterity?他写下这些笔记是为让后人受益吗?
英汉词典释义
n.
后代;后世
Few of his works will go down to posterity.他的作品没有几件会流传到后世。The names of those who died are recorded for posterity on a tablet at the back of the church.死者姓名都刻在教堂后面的一块石匾上以便后人铭记。
子孙;后裔
Byron affected to despise posterity.拜伦假装轻视后裔。
英英词典释义
Noun
1. all of the offspring of a given progenitor;
"we must secure the benefits of freedom for ourselves and our posterity"