But doubling their speed made everyone young and old equally worse.

但速度的加倍让每个人的情况都一样糟糕，无论老少。

But what would be some consequences if this speed doubled to once every 12 hours.

但是如果这个速度翻倍到每 12 小时转一周，会有什么后果呢？

That's when the growth spurt starts, where you might grow up to 4 inches a year, double the speed.

这就是生长高峰开始的时机，你可能一年长个4英寸，速度翻倍。

And people often ask like, what do you actually gain from listening to an audiobook at double or triple speed?

人们经常会问，你到底从以两倍或三倍的速度听有声书中获得了什么？

Those who used two different strategies nearly doubled the speed of accuracy of the task compared to the controlled group.

与另一组组相比，使用两种不同训练方式的志愿者完成任务的准确率几乎提高了一倍。

In fact, it depends on the square of the velocity; double its speed and it'll have four times the kinetic energy.

实际上，它取决于那个速度的平方；即如果速度加倍，它的动能就是原来的四倍。

Double speed playback was human's most important invention.

双速播放是人类最重要的发明。

But what would be some consequences if this speed doubled to once every 12 hours How would this affect our daily lives?

但如果因为一些状况发生导致自转速度增加一天变成12小时这会如何影响到我们的日常生活呢?

Even playing this at double speed, this guy is talking way too slow.

- 即使以双倍速度播放，这家伙说话也太慢了。

Which is the same impulse that makes people listen to podcasts at double speed.

这与人们以双倍速度收听播客的冲动相同。

In a 2018 study, researchers have both young and old people read at their own pace, then they tested their comprehension after making them double their speed.

2018年的一项研究中，研究人员让年轻人和老年人按照自己的节奏阅读，然后让他们的阅读速度翻倍，测试他们的理解能力。

And as I speak tonight on New Year's Eve, we've met our target, we've doubled the speed of the booster rollout, and it's precisely because of that huge national effort that we can celebrate tonight at all.

当我在跨年夜讲这番话的时候，我们已经实现了接种目标。正是得益于举国上下团结一心共克时艰，我们加强针的推广速度翻了一倍，这样今晚我们才能高高兴兴的庆祝新年。