- Every single thing alive today
今天活着的一切 - can trace its heritage back four billion years.
都可以追溯到40亿年前 - This in the face of incredible odds.
面对的是如此不可思议的概率 - 99% of all species that have ever existed
曾经存在过的全部物种之中 - are now extinct.
99%已经灭绝 - Life today is the 1% that made it through.
如今的生命只是那幸存下来的1% - This series will explore the most important milestones in the history of life.
本片将探索生命史上最重要的里程碑
99% of all species that have ever existed 曾经存在过的全部物种之中
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