Maybe it'll even be exciting enough to tempt valve into making Half-Life three.

或许它甚至足够吸引 Valve 去制作《3》。

5,730-year half-life of carbon-14 is used as a geochronometer.

碳14的5730年的被来当做地质时标。

They leave our body with a half-life of four hours, six hours, so very quickly.

它离开我的身体的是4小时，6小时，所以很快。

The 5,730-year half-life of carbon 14 is used as a geochronometer.

碳14的是5730年，它可以作为地质时标。

Minutes. I mean, its half-life is decreasing exponentially.

它的每分钟正以指数递减。

In today's world, the half-life of a technical skill is roughly 2.5 years.

在当今世界，一项技术技能的约为 2.5 年。

Skinner announces that Hapuna Has a short half-time, or half-life, sorry.

斯金纳宣布，哈普纳有一个暂的场休息，或者说，抱歉。

The half-life of such an event is at least 1034 years, and it's almost certainly longer.

这种事件的至少是1034年，而且几乎可以肯定会更长。

Taken by itself, cocaine has a short half-life and is almost completely metabolized by the liver in about an hour.

可卡因本身很，1小时内几乎完全被肝脏代谢。

If it was turned into a medicine, it could never be delivered because it had a half-life of only 45 minutes.

就算是做成药，也不可能售卖因为它的只有45分钟。

The liver is quick to metabolize and eliminates nicotine from the body; in fact, it's half-life is only about 1-2 hours.

尼古丁的其实只有1-2小时，肝脏可以快速代谢掉体内的尼古丁。

The half-life of plutonium, in other words the time it takes for half of the plutonium to disappear, is 245,000 years.

钸的，换句话说，要让数的钸消失需要245000年的时间。

In any case, a lie’s half-life is manageable.

无论如何， 谎言的是可以控制的。

But now the half-life of that advantage has shrunk to just one year.

但如今，这种优势的已经缩到仅一年。

That's a half-life and that's governed by the same kind of physics.

这就是，它遵循着同样的物理法则。

They have half-lives of 77 and 221 days, respectively.

它的分别为77天和221天。

Instead, there must be a different isotope with a longer half-life behind this enhanced glow.

相反，必须有一种更长的同位素导致了这种增强的光芒。

And how to make calculations based on an elements half life.

以及如何基于元素的进行计算。

Now, it has a very short half-life in the body.

现在，它在体内的非常。

So, coffee has a half-life of six hours.

所以，咖啡的是六小时。