So Arlan set out to do something that had never been done before.因此阿伦开始做一件别人没做过的事

set out:开始；打算

They set out on the last stage of their journey.

他们开始了旅行的最后一程。

if we were able to alter oxidative damage,the animals would live shorter.如果能改变氧化所造成的伤害那些动物寿命会减短

be able to:会； 能

He stepped up so as to be able to speak.

为看得更清楚，他上到高处。

They appear to be able to handle the problem.

他们似乎可以处理这个问题。

But he carried on with his team,不过他和他的团队仍继续实验

carry on:继续进行

Now we can carry on with our work.

现在我们可以继续干了。

In any event, we should carry on with our research.

无论如何，我们必须坚持研究。