And when someone says your words or actions hit the nail on the head, he means what you said or did was exactly right.

VOA: special.2009.09.20

I've always been like that. Byron was the only person I enjoyed reading during the nail-biting and tense period of studying for my orals.

我从下就这样，拜伦是,我读书的时候唯一一个喜欢的作家。

耶鲁公开课 - 文学理论导论课程节选

And to give you a size perspective, that is about the size of my pinky finger nail, 4 mm on the side.

这个芯片，有我的手指甲那么大，边长4毫米。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

Then they nail on battens to hold the hatch coverings firmly in place.

VOA: special.2011.03.06

There's a famous saying, "If you're good with a hammer, everything looks like a nail."

正像一句名言说的那样，如果你很会用锤子，那么一切看上去都是钉子“

耶鲁公开课 - 金融市场课程节选

Lenore answered, "It is as big as the nail on my finger.

VOA: special.2009.03.28

But you can nail it to the wall and pull one end.

你可以将它钉在墙上,拉着它的一端

耶鲁公开课 - 基础物理课程节选

He wrote: For want of a nail, the shoe is lost For want of a shoe, the horse is lost For want of a horse, the rider is lost.

VOA: special.2009.11.01

Again, the size is of your pinky finger nail, all within the skin so you can just turn out your information to drive, for example a replaced arm or a computer screen.

这同样与手指甲那么大，因为放在皮肤下，所以你只要发出信息既可以驱动，诸如你的假肢或者电脑屏幕等。

斯坦福公开课 - 7个颠覆你思想的演讲课程节选

He wrote: For want of a rider, the battle was lost For want of a battle, the kingdom was lost And all for the want of a horseshoe nail.

VOA: special.2009.11.01

With seconds left in regulation time, South Africa equalized on a free kick by Mphela that sent the game into 30 nail-biting minutes of overtime.

VOA: standard.2009.06.29