You're living about... probably about half a second in the past.

你生活在......可能是过去的半秒钟。

The cells then enter into a period of inactivity - again, about half a second.

然后这些细胞会进入间歇期—再次活跃约半秒。

But just for half a second and then your face would resume its happiness.

但是半秒钟之后你又会恢复成笑脸。

We do all this involuntarily—healthy eyes can focus from infinity to here in less than half a second.

我们不用靠意识操控，健康的眼睛能够在半秒内把焦距从无限远拉到六英寸。

The gap between behavior and reward with the internet is incredibly small — it can be half a second.

在互联网上，你的行为和奖赏之间的间隔极其小——间隔可能仅有零点五秒。

Half a second later she had reached the bottom.

这坑似乎刚刚出现在她眼前，转眼间，她已滑到底了。

She shaved half a second off the world record.

【shave】她把世界纪录缩短了半秒。

Hold on, this will only take half a second.

【half】等一等，一会儿就行了。

So you saw the attacker for what, half a second?

所以你看着那个袭击者多久，半秒钟？

I know that if saccade down for a half a second, they will see it.

我知道, 只要蹲下半秒, 他们就会看到。

A split-second during -- you know, a half a second is going to be significant, so this was a big challenge.

在这种情况下，半秒钟是很重要的，所以这是一个巨大的挑战。

And after this half a second, they start flying again, but they're never actually crashing.

半秒后，它们又开始飞行，但它们并没有真正坠毁。

You gotta survive, don't you? It lasted half a second!

我必须生存，你懂吗？ 而且这只持续了半秒钟！

One answer is there are times in your life where half a second can matter a lot.

一个答案是，在你的生活中，有时半秒可能很重要。

The students' task is to decide in sometimes less than half a second which of the two people is the more competent.

学生们的任务是在半秒以之内判断两个人中谁更有能力。

His desk is full of clutters yet he has the magic power to find out what he needs within half a second.

他的桌子乱七八糟，可是人家就是有本事半秒之内把要的东西找出来。

But if they stop for just a half a second, that might not be enough time for them to hit the ground.

但是如果它们只停下半秒种，那没有足够的时间让它们落到地面。

Turns out this occurs within the first already 100 milliseconds, that's about half a second before we even become aware of it.

我们发现，整个过程发生在前100毫秒，也就是我们有所感知之前半秒钟。

The robot uses propellers to swim to the surface, then shoot itself out of the water–in less than half a second.

机器人使用螺旋桨游到水面，然后在不到半秒的时间内将自己射出水面。

The researchers said that during deep sleep, our brain cells are active for a short period of time - about half a second.

研究人员表示在深层睡眠期间，我们的脑细胞会出现短暂的活跃—大概约半秒。