They're genetically modified mice that have twice the muscle mass than unaltered mice, and 40 of them were recently sent into space for a study on muscle mass.

他们的基因发生了改变，比起未改变的老鼠他们的肌肉，近其中40只因肌肉研究而被送到了太空中。

That basically can revolutionize major industries that still hasn't been done.

那基本上可以革命性地改变那些至今仍未被改变的重大行业。

But planting this many trees, just the genetically UNALTERED kind - has  become surprisingly controversial.

但种植这么多树，而且只是基因未改变的树，却引起了令人惊讶的争议。

And even while their plant machinery is being co-opted as an enzyme-making factory, the plants suffer no reduction in yield while grown out in the field compared with unaltered plants.

即使他们的植物机械被选作酶制造工厂，与未改变的植物相比， 这些植物在田间种植时的产量也没有降低。

The national park is a spacious, largely unchanged region of exceptional and multifaceted  natural value, and includes one or more preserved or insignificantly altered ecosystems.

国家公园是一个广阔且几乎未被改变的地区， 具有非凡和多方面的自然价值，并包括一个多个被几乎未被改变的生态系统。

Judging from the past, we may safely infer that not one living species will transmit its unaltered likeness to a distinct futurity.

从过去的情况来看， 我们可以有把握地推断， 没有一个生物物种会将其未改变的相似性传递到一个截然不同的未来。

The thirteenth-century cathedral towered above a sixteenth-century mass of tiled roofs, ending abruptly in walls and a landscape that had not changed.

十三世纪的大教堂耸立在十六世纪的大量瓦片屋顶之上， 突然终止于墙壁和未改变的景观。

The decline of donations may also occur without any visible change in behavior and without any expression of the changed objectives.

捐赠的减少也可能在没有明显行为变化和未明确表达目标改变的情况下悄然发生。

This is very different from than.

这与than非常不同。 注：原文中的" than" 未改变，因为它的译依赖于上下文，在此句中没有明确的译需求。如果需要更具体的译，请提供更多的上下文信息。

The other nine species (marked by capital letters) of our original genus, may for long but unequal periods continue to transmit unaltered descendants; and this is shown in the diagram by the dotted lines unequally prolonged upwards.

我们原始属的其他九个物种（ 以大写字母标记）可能会在很长一段时间内但不平等地继续传播未改变的后代；这在图中由向上不等长的虚线表示。