I love life,
我热爱生活
so I want to remain young,
所以我想保持年轻
energetic, enjoy it for as long as I can.
活力充沛 尽可能长久地享受生活
I'm medically trained.
我受过医学培训
I know all the standard advice for staying healthy.
了解所有保持健康的专业建议
But in my case, it doesn't seem to be working.
但对是我似乎不起作用
I've discovered that my body
我发现我的身体
is not the lean, long-lived machine I would like it to be.
不如我理想中的那样清瘦健康
A third of your body is fat.
你的身体三分之一都是脂肪
Thank you for making that point so emphatically.
多谢你特意强调这点
I wanted to see
我想看看
if science can offer a different way to stop the rot,
科学能否提供其他方法能让我不再衰老
slow the clock,
放慢时间的脚步
so I set off to find experts
因此我开始寻找
who are trying to combat the ravages of ageing.
正在设法对抗衰老的专家
We are rewriting human physiology here.
我们将在这里改写人体生理学
If you can find something else that you can do
如果你找到了更好的方法
that it doesn't hurt you--
那种方法不仅无害
that benefits you
还对你有益
and that causes these changes,
也能达到同样的效果
I'd like to know.
请告诉我

重点解释：

1.as long as 和 ... 一样长

例句：This line is four times as long as that one.
这条线是那条线的四倍长。

2.seem to 似乎 ...

例句：All my troubles seem to come together.
我的各种问题似乎同时出现了

3.set off 出发，动身

例句：What time are you planning to set off tomorrow?
你打算明天几点钟启程?