Having too much oxygen in your body creates free radicals.

里过多的氧气会生自由基。

Free radicals are highly reactive chemical entities that can damage cells.

自由基是能破坏细胞的、有高反应活性的化学实。

Free radicals which can oxidize cholesterol and thus lead to heart disease.

自由基能氧化胆固醇，从而导致心脏病。

Meaning, when exposed to oxygen or heat, they can form toxic byproducts and free radicals.

意思是，当遇到氧或被加热，多元不饱和脂肪酸极易生有毒副物及自由基。

It can react with compounds in our bodies and create those free radicals.

它可以与我们内的化合物反应，生自由基。

Because PAHs form with the help of free radicals, and antioxidants could slow down that process.

因为多环芳烃需要借助自由基生成，而抗氧化物质能减缓这一过程。

It is unlike you to introduce such a free radical into an otherwise highly functional relationship.

让这样一个不稳定因加入一个高功能性的关系中不像你会做的事。

And a growing body of evidence shows that free radicals are involved in the signalling between cells.

越来越多的证据表明自由基参与细胞之间的信号传递。

And when artemisinin encounters hemozoin, the two compounds react to create unstable atoms known as free radicals.

当青蒿遇到疟原虫，这两种化合物会发生反应，生被称为自由基的不稳定原子。

And when it does this, the free radical changes the chemical structure of those molecules, sometimes damaging them.

当它这样做，自由基会改变这些分子的化学结构，有会破坏它们。

Electrons love travelling in pairs and are most stable that way, but free radicals have unpaired electrons.

电子喜欢成对活动，并且它在这种模式下最稳定，但是自由基会破坏成对的电子。

So when you heat vegetable oils, free radicals as well as small lipid fragments called aldehydes can form.

所以，当被加热，菜油会生自由基和一种名叫乙醛的脂质碎片。

And even if antioxidants aren't overwhelmed, some free radicals still slip through, slowly damaging our cells year after year.

即使抗氧化剂没有被淹没，一些自由基仍然会溜走，年复一年地慢慢破坏我们的细胞。

Also, remember to have lots of Vitamin C as it is a powerhouse of antioxidants and can combat free radicals.

此外，要记住摄入大量的维生C，因为它是抗氧化剂的强大力量，可以对抗自由基。

If oxygen steals electrons from molecules in our bodies, it creates unstable molecules called free radicals that can damage cells.

如氧气从我们内的分子中窃取电子，它会生不稳定的分子，称为自由基，会损害细胞。

In order to get the process kicked off you have to introduce a free radical.

为了启动该过程， 您必须引入自由基。

See, when an antioxidant gives an electron to a free radical, it briefly becomes unstable.

你看，当抗氧化剂给自由基一个电子，它会短暂地变得不稳定。

So, while our bodies make the best of the situation, they also try to keep free radical damage to a minimum.

因此，在我们的充分利用这种情况的同，它们也会尽量将自由基的伤害降到最低。

SpaceX has become the free radical trying to upend everything about this industry.

SpaceX已经成为试图颠覆这个行业一切的自由基。

As a result, free radicals react extremely readily with other atoms — to the point where they can actually tear cells apart.

所以呢，自由基极易与其他原子发生反应——以至于它们可以将细胞撕裂。