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.

颇具影响史学家我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 。

We don't know exactly when humans might actually have to leave Earth, but what if we knew the exact time Earth was going die?

我们不知道人类会在何时离开地球，但假如我们知道地球灭亡准确时间呢？

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，皇帝不停做出错误决策，最终导致了国家灭亡。

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.

我对灭绝这情还是略知一，让我来告诉你，你可能会觉得这显而易见，但走向灭亡是一件糟糕情。

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！

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.

实上它们灭亡只是偶然而已。

Mars's small size condemning the planet to die.

火星小体积注定了它灭亡。

Can we save ourselves from the suns ultimate death?

我们能从太阳最终灭亡中拯救自己吗?

The second was the collapse of the Yuan Dynasty.

个是元朝灭亡。

So what's the point of anything if it all ends?

所以如果万物终将灭亡，那么一切意义何在？

Just like most mutations are evolutionary dead ends.

就像大多数转变 都是逐渐走向灭亡过程。

It's a rebellion that eventually seems to lead only to his own demise.

这场叛乱最终似乎只会导致他自己灭亡。

Fortunately, people are working hard to save lions from extinction.

值得庆幸是，人类正在将它们拉离灭亡深渊。

The question now is how might Republicans retaliate against the death of the filibuster.

现在问题是共和党会对冗长发言灭亡采取何种反击方式。

It's confirming important facts about the universe and what's driving it to its demise.

它证实了关于宇宙重要实以及是什么导致了宇宙灭亡。

Both consoles have seen a slim revision, we've seen stuff like the PlayStation VR on the Sony side as well as the death of Kinect on the Microsoft side.

这两款游戏机都进行了微调，我们看到了索尼 PlayStation VR，同样见证了微软 Kinect 灭亡。

From the middle of the 10th century, after the fall of the Carolingian Empire, imperial power in western and central Europe was being replaced by a large number of feudal lords, who were practically sovereign in their territories.

从10世纪中叶开始，随着加洛林王朝灭亡，西欧和中欧皇权被大量封建领主所取代，这些领主实际上在他们领土上拥有主权。

There had never been a human population before this. Its almost invariable that large mammals disappeared and not just some animals, its a large proportion. In North America its something like two-thirds to three-quarters.

假如某地区在此之前从来没有人类群体踏足过，一旦人类来了，大型哺乳动物灭亡几乎是不可避免；而且不仅仅是部分动物，而是相当大比重动物。在北美，因此消亡物种高达三分之至四分之三。”