Death is normal; we are genetically programmed to disintegrate and perish, even under ideal conditions.

死亡是正；们基因决定们即使在最理想环境里也会解体和灭亡。

The influential historian Edward Gibbon, a favorite of our nation's founders, believed that the Western Empire fell in 476 AD with the departure of Romulus Augustus and the accession of King Odovacar of Italy.

颇具影响力历史学家国最受欢迎缔造者爱德华·吉本，认为西罗马是在476年奥古斯都路斯退位，意大利国王奥多亚克登基后灭亡 。

The wife told her husband that unless he left the children to die in the forest, the whole family would die.

妻子告诉丈夫，如果他不把孩子们扔到森林里饿死，整个家庭就会灭亡。

When on earth they fade and perish.

当他们在地球凋零和灭亡。

Being able to observe, as it were, how supernovas play out by measuring the increasing intensity of their brightness over time, allows scientists to better understand the life, and death of stars.

人们能够通过这种方式观测并对比日益变亮超星体亮度来弄清它们爆发过程，从而让科学家更好地了解星辰诞生和灭亡。

They're all in trouble, but they're not all dying.

它们确实面临危机，但并非都会走向灭亡。

It's at this very moment that all the heavier elements in the universe are created, as the star dies, in a super nova explosion.

就是这个时刻，宇宙中所有重元素诞生了，即恒星灭亡时超新星爆炸。

Without Quyuan's advice, the emperor continued to make ill decisions that caused the country's downfall.

没有屈原直言进谏，皇帝不错误决策，最终导致了国家灭亡。

Is it possible to prevent the creation of such a weapon or are we doomed?

有没有可能阻止制造这种武器，或者们注定要灭亡？

I know a thing or two about extinction, and let me tell you, and you'd kind of think this would be obvious, going extinct is a bad thing.

对灭绝这事情还是略知一二，让来告诉你，你可能会觉得这显而易见，但走向灭亡是一件糟糕事情。

We are killing ourselves by using too many plastic.

们用了太多塑料，这是在自取灭亡。

The caliphate has crumbled, and ISIS has been defeated.

哈里发已经灭亡，ISIS已被击败。

I'm sure that the newspaper will go the way of the Dodo fairly soon.

确定报纸很快就会像渡渡鸟一样灭亡。

And so, over three centuries after its founding, the Mughal Empire came to an end.

就这样，在莫卧儿帝国建立三个多世纪后，灭亡了。

They believe their industry would perish without fast foods.

他们认为没有快餐，他们工业就会灭亡。

That was the end of the Egyptian empire, which had lasted almost 3,000 years!

这便是存在了将近3000年之久埃及帝国灭亡！

“Poland is not yet lost, while we still live.”

“们一息尚存，波兰就绝不会灭亡。”

This culminated in a global conflict that doomed the tsars, the Habsburgs-and the sultans.

这最终导致了一场全球冲突，注定了沙皇、哈布斯堡家族和苏丹灭亡。

In fact, they made them go extinct, by accident.

事实它们灭亡只是偶然而已。

When a massive star dies, it leaves a smaller, remnant core behind.

在一颗大质量恒星灭亡时，会留下一个坍缩核。