But just how many fatherless creatures are running, slithering, and swimming around out there is unknown: it's a tough thing to track without population-wide genetic analyses.

但是，没有人知道世界上到底有多少父亲的生物在四处游：缺乏种群范围内的遗传分析，追踪变得非常困难。

The second benefit of cell-free biology is that it has the potential to avoid some of the social and environmental drawbacks associated with relying on living organisms.

细胞生物学的第二个好处是，它有可能避免因依赖活体生物的某些社会和环境缺陷。

But cell-free biology should be cheered on.

但是细胞生物学的发展应该受到鼓励。

Cell-free biology, an idea first proposed about a century ago, is at last having its coming-out party.

大约一个世纪前，细胞生物学的想法首次提出，如今终要隆重登场。

There was some lady who was just arguing that there's no biological difference between men and women.

有位女士坚称男女之间并生物学上的差异。