When we drift off, the areas of our brain that control motor function are inactivated in favor of those that control our sleep cycles, which is why you can dream about riding your bike without actually moving your feet.

当我们昏昏欲睡时，我们大脑中控制运动功能区域有活力、那些控制我们睡眠周期区域取而代之发挥作用。这就是为什么即使有真动你退，你仍梦到骑自行车。

This study aimed to pinpoint the genetic changes that led to hind limb loss, and discovered a drastic change that inactivated a gene essential for limb development called, and I'm not joking, Sonic hedgehog or Shh.

这项研究旨在找到导致后肢消失基因变化。他们发现了一个使对四肢发育很重要基因失活重大变化，我开玩笑，这个基因叫做音猬因子。

The consequence is to inactivate the gene being methylated.

甲基化作用将使甲基化基因失去活性。

But genes that help detect bitter, sweet and savory tastes are inactivated.

但是，帮助感知苦味、甜味和咸味基因是不活跃。

Like the polio vaccine, the first RSV vaccine was based on a whole inactivated virus.

像脊髓灰质炎疫苗一样，首只 RSV 疫苗基于全灭活病毒而研制。

It is often very energy consuming to produce the enzymes that inactivate the antibiotics.

生产使抗生素失活酶通常是非常耗能。

That if we could inactivate the virus, that we could move onto a vaccine very quickly, whereas if you worked only with a weakened virus, you'd have to demonstrate its safety eventually. So that was the reasoning.

如果我们能灭活病毒，我们就能很快研制出疫苗，而如果你只研究弱毒型，你最终必须证明它安全性。这就是原因。

The last light a plant sees at night is in the far red of the spectrum, and this longer wavelength light inactivates a light-sensing molecule inside the plant, that isn't reactivated until the next morning.

植物在夜间看到最后一束光在光谱中属于远红光，而这种光使植物内部光敏分子失活，直到第二天早上它被光击中时才重新激活。

Fortunately, the liver makes alpha-1 antitrypsin which gets released into the blood and sent to the lungs, where it inhibits neutrophil elastase just like it inhibits trypsin, inactivating it before it can break down the protein elastin.

幸运是，肝产生α-1抗胰蛋白酶，释放入血进肺，在肺中像抑制胰蛋白酶一样，抑制中性粒细胞弹性蛋白酶，使弹性蛋白酶在水解弹性纤维之前失活。

Vinegar inactivates the sting's venom, so remember to pack a bottle of vinegar the next time you head to the beach!

醋可以降低毒刺细胞活性，所以下次去海滩时候记得带一瓶醋！

Jacobs was studying whether the TB drug isoniazid was being inactivated by the presence of a particular amino acid, cysteine, which in chemical terms acts as a reducing agent, by donating electrons.

Jacobs 之前一直研究为何肺结核药物异烟肼被氨基酸和半胱氨酸灭活，而异烟肼在化学反应中通过失电子，起到还原剂作用。

The term " knockout" is used by scientists to describe organisms that have had all or part of a gene removed or inactivated by genetic engineering.

“基因剔除”一词被科学家用来描述通过基因工程去除或灭活全部或部分基因生物。

But other approaches, like using inactivated cold viruses to shuttle the spike protein, or harmless versions of the virus itself, could also soon make their way to market.

但其他方法，如使用灭活感冒病毒来运送尖峰蛋白，或病毒本身无害版本，也可能很快进入市场。

So the Centers for Disease Control stated that Ebola survives on the order of minutes in water and is almost instantly or very, very rapidly inactivated.

因此疾病控制中心声明，埃博拉在水中只能存活几分钟，几乎立刻就失去活性。

This ends up further damaging the liver and it promotes insulin resistance within the liver by inactivating IRS-1, that insulin receptor from before.

这进一步损害肝脏，还通过灭活胰岛素受体 IRS-1 来促进胰岛素抗性。

Once inside it inactivates the ribosomes, which manufacture proteins that your cells need to survive and reproduce, and once the protein train stops, life stops.

然后抑止细胞核糖体（ribosome）作用，核糖体是制造所有存活、成所必须蛋白质工厂，一旦蛋白质生产链戛然而止，生命也如风中残烛。

Vitamin B6 deficiencies can also commonly happen as a result of isoniazid treatment for tuberculosis, as isoniazid attaches and inactivates vitamin B6.

在使用异烟肼治疗结核病时，由于异烟肼附着并灭活维生素B6，因而维生素B6缺乏症为常见。

Right. And finally, there's air disinfection — for example, using UV light to " kill" or inactivate a virus in the air.

是。最后一个重点是“空气消毒”——比如使用紫外线灯“杀死”空气中病毒或使其失去活性。

Yeah, I mean, I think at the sort of microscopic level, it is damaging cells and it's inactivating proteins and harming DNA.

好，在微观层面，高温破坏细胞，使蛋白质失活，损害DNA。

One way is by ingesting it, but the drug is often inactivated by stomach acid unless it's mixed with something alkaline.

方法一是口服，但可卡因常常被胃酸灭活，除非和一些碱性物质同服。