They died off a long time ago.

他们很久以前就灭绝了。

Thirty-six of those species are close to dying off completely.

其中有36种相继走向完全灭绝。

This hypoxia also causes the parasympathetic nerve fibers to die off.

这种缺氧还会导致副交感神经纤维死亡。

Supporters of populism will become disillusioned, or will simply die off.

民粹主义的信众会幻灭或离世。

Still, most cell lines eventually die off, especially outside the human body.

但是，一般的细胞系，特别是在人体外的 最终会死去。

Eventually the enamel-building cell dies off, leaving a long crystalline rod behind.

最终造釉细胞死亡，留下了长长的透明结晶体。

As with other kinds of variant, most will die off relatively quickly.

和其他种类的变体一样，大多数变体会相对较快地消亡。

The living matter within the cell dies off, leaving behind only the cellulose.

细胞死亡，只留下纤维素。

It will now continue to fall for decades, as larger generations die off.

现在，随着人数更多的几代人死去，韩国人口将继续下降数十年。

Coral infected with it die off at a rate of 66 to 100 percent.

感染了这种疾病的珊瑚的死亡率为66%到100%。

Some whale species are dying off because climate change has affected their supply of food.

由于气候变化影响了鲸类的食物供应，一些鲸类正在灭绝。

Fewer stars will be born, and the ones already born will start to die off.

诞生的恒星会变得更少，而那些已经诞生的恒星会开始消亡。

So it begs the question, what would happen if all of the bees died off?

这就引出了一个问题，如果所有的蜜蜂都灭绝了，会发生什么？

For many years, scientists have worked to bring the pelicans back from totally dying off.

多年来，科学家一直在努力使鹈鹕免于灭绝。

As a day-to-day essential, it will die off with the generation who read print newspapers.

作为日常必需品，它将随着阅读印刷报纸的一代而消亡。

Homo floresiensis are thought to be among the last early human species to die off.

弗洛勒斯人被认为是最后灭绝的早期人类物种之一。

We didn't exactly forget, it's just usually when the hostess dies the party's off.

我们没有忘记 只是随着女主人的去世, 晚宴也取消了。

It was likely only a few hundred people and they may have died off.

他说，当时可能只有几百人，他们可能已经灭绝了。

That inability to reproduce spread across the mosquitoes and the entire population died off within eleven generations.

这种无法繁殖的情况会在蚊子之间传播，这样，整个蚊子群体不出11代就会悉数灭亡。

Most species would die off, including humans, since crops we rely on for sustenance would all disappear.

大多数物种会灭绝，包括人类，因为我们赖以生存的农作物都会消失。