Many Neanderthal ancestors,in fact: there are so many generations in 40,000 years that a single Neanderthal's genetic contribution would be untraceable.

许多尼安德特人的祖先，事实上：在 40,000 年中有如此多的世代，以至于单个尼安德特人的遗传贡献将无法追踪。