Who came up with leap years and why do we have them?

谁提出了，为什么我们有呢？

All right, so 2024 is a leap year.

2024是。

Looking at you here, leap years.

看下历，2020。

We have a solar eclipse taken place in April, and it's a leap year.

四月有食，今又是。

And there is some interesting history associated with leap years.

有关还有一些有趣的历史。

In a leap year, the dates jump over one day of the week.

在，跳过一周中的一天。

So, leap years might seem silly.

因此，可能看起来很愚蠢。

So, that's how leap years work.

所以，这就是的机制啦。

After all, we all know the answer is 365-and 366 in leap years-right?

毕竟，我们都知道答案是365天，而是366天，对吧？

February has twenty-eight alone. All the rest have thirty-one. Except in leap year.

二月仅有二十八天。 除了在， 余下的月份均有三十一天。

Pope Gregory also made February 29th, the official date to add during a leap year.

格里高利还把2月29确定为的官方。

And the entire 12 month period with a February 29 in it is called a leap year.

12个月的时间里拥有2月29的那一被称为。

It's called a leap year and it's maybe the strangest thing we do on the calendar.

这被称为，这可能是我们在历上所做的最奇怪的事情。

We get 366 days on the calendar instead of 365. But why, what is a leap year?

历上总共有366天，而不是365天。但是，这是为什么呢，到底是什么？

To mark the start of the 366-day countdown (2012 is a leap year), special events are planned for today.

今天，人们计划举办独具特色的庆祝活动来启动伦敦奥运366天倒计时（2012是）。

Last year was a leap year, skewing the comparison of this year's shorter first quarter with last year's longer one.

去是，所以今的第一季度相对去来说要短一些。

That means that in the 1600s, the 2000s, those have leap years, but not the 1700s, 1800s, and 1900s.

这意味着在1600，2000，这些是，但在1700、1800和1900不是。

Leap years were believed to be difficult, and leap days unlucky and a bad time to begin anything new.

被认为是很艰难的一， 而是不吉利的，不是开始新事物的好时机。

You can choose from, why do we have leap years?

你可以选择，为什么我们有？

So, folks born on that date in a leap year will get to celebrate their birthdays on their actual birth date.

因此那一天出生的人们在这样的实际庆祝自己的生。