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

或许甚至足够吸引 Valve 去制作《半衰期3》。

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

碳14的5730年的半衰期被人们用来当做地质时标。

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

们离开我们的身体的半衰期是4小时，6小时，所很快。

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

碳14的半衰期是5730年，作为地质时标。

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

的半衰期每分钟指数递减。

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

在当今世界，一能的半衰期约为 2.5 年。

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

这种事件的半衰期至少是1034年，而且几乎肯定会更长。

And yet, a year or two later, you were there with a medicine

因为的半衰期只有45分钟。

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

卡因本身半衰期很短，1小时内几乎完全被肝脏代谢。

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

尼古丁的半衰期其实只有1-2小时，肝脏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.

钸的半衰期，换句话说，要让半数的钸消失需要245000年的时间。

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

无论如何， 谎言的半衰期是控制的。

Now you've heard of half life, it's the measurement that tells us just that.

现在你已经听说过半衰期了， 是测量告诉我们这一点。

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

但现在这种优势的半衰期已经缩短到只有一年。

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

及如何根据元素的半衰期进行计算。

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

现在，在体内的半衰期非常短。

Dexamethasone is the glucocorticoid of choice because of its low mineralocorticoid effect and long half-life.

地塞米松是首选的糖皮质激素，因为的盐皮质激素作用低且半衰期长。

The half-life of that is short.

DB：的半衰期很短。

Different nuclei have different half lives.

不同的原子核有不同的半衰期。

And these designer cancer T cells, CAR T cells, have a calculated half-life of more than 17 years.

而这些设计癌症T细胞， CAR-T细胞，计算的半衰期超过17年。