But thousands more will be there Friday to witness an event that lasts just two minutes-a total eclipse of the sun.

本周五这里有超过数千人将会目睹持续2分钟的天文奇观日全食。

The most spectacular, the one for your bucket list is a total eclipse of the sun.

最壮观的是日全食。

And you've probably heard of a total eclipse of the sun or the moon, but a total solar eclipse and a total lunar eclipse are actually pretty different.

你可能听说过日全食或月全食，但日全食和月全食实际上非常不同。

Now it's true that whenever there is a total eclipse of the sun, you can see the corona, that outer white circle surrounding the sun.

（转折、对比，第三题出题点）But how long does a total solar eclipse last？

You know, William, I've never seen the total eclipse of the sun before. This is my first experience with this. And, of course, we've all seen the pictures in the films.

你知道，威廉，我以前从未见过日全食。这是我的第一次体验。当然，我们都看过电影中的画面。