Do you want to be a world leader?

The Senator is the leading candidate for President.

这个参议员是总统选举中的领先者.

The challenge is how to close that gap front.

现在的挑战是如何缩短与领先者之间的差距.

The leader loses ground as the rest of the runners accelerate.

领先者在其余赛跑者加速时逐渐失去了优势.

His company is the leader in precision metal casting.

他的公司在精密金属铸造方面是领先者.

The leader is losing ground as the rest of the runners accelerate.

领先者在其馀赛跑者加速时就逐渐失去了优势.

Presumably, human-cloning researchers could also do their work on the sly, emerging only when they succeed.

很可能, 人类克隆研究人员也会背地里偷偷地工作, 直到成功时才露面.

Although human cloning would further complicate the legal issues, this is not grounds for banning it.

虽然人的克隆将会进一步使法律问题复杂化, 但这并不是禁止它的理由.

With this system, you can neatly reproduce yourself without any partner. Human cloning, it's called.

使用这个系统, 你能够不需要任何(性)伙伴完整地重制你自己, 这被称作“人类克隆”.

Once human cloning is possible, why would anyone want to have a child that way?

一旦克隆人成为可能, 那么人们为什么要通过那种方式要孩子 呢 ?

Human cloning, it's called.

这就叫做人类无性生殖.

Human Cloning -- Will It Ever Happen?

克隆人 -- 这会发全 吗 ?

Other people think human cloning is okay.

有些人觉得克隆人是可以的.

To many non-scientists, Dolly's cloning raised the spectre of human cloning.

对于许多不是科学家的人来说, 克隆多利引起了他们起克隆人的恐惧.

So who is most likely to want or use human cloning?

所以谁最有可能需要或使用人类克隆技术 呢 ?

But human cloning, if allowed, is a distant possibility.

但是, 即使允许克隆人类, 其可能性也很遥远.

What would happen if human cloning became a reality?

万一人类无性生殖成为现实,将会发生些什么 呢 ?

Where did you get that information about human cloning?

你是从哪儿获得那则关于克隆人的信息的?

Sara, do the same with your story about the clone.

萨拉, 同样写你说的克隆人的故事.

The outgoing animals quickly became the friends Jeff had never had, and he began to live for these visits.

这些对人友好的动物成了杰夫从未有过的朋友，他开始日思夜想去探访他们。

It has led some cosmologists to the verge of abandoning their fondest dream: a theory that can account for the universe and everything about it in a single breath.

这局面迫使一些宇宙学家开始放弃他们日思夜想的美梦：找到一个可以用以解释宇宙万物的统一理论。