In spring it is known as the vernal equinox, and in fall the autumnal equinox.

春天是春，天是。

Still, others have speculated that the day was tied to the vernal equinox or first day of spring in the Northern Hemisphere, when Mother Nature frequently fooled people with changing, unpredictable weather.

有人猜测，愚人节与春有关，即北半球春天的第一天，大自然母亲用变化莫测的天气来愚弄人们。

One day before the vernal equinox. Dad? - Yeah. Mark that.

春点的前一天 爸? - 画个记号。

Yesterday was officially the autumnal equinox in the northern hemisphere, and the vernal or Spring equinox in the southern one.

昨天是北半球的，南半球的春。

When the ancients first thought up this idea, the Sun was in Aries on March 22, the vernal equinox (what some people call the first day of spring).

当古人第一次产生划星座的想法时，太阳在3月22进入白羊座，也就是春（有些人称之为春季的第一天）。

And so if you dig down a couple of feet, you'd swear it was cement that somebody had put out at some time, and that's why the vernal pools exist.

如果你往下挖几英尺，你会发誓说这是有人在某个时候放的水泥——而这就是春池存在的原因。

Vernal pools show up every spring but disappear in the heat of summer, just like the will to conquer my reading list on the beach.

冬水池每年春天都会出现，但在炎热的夏天就会消失，就像我在海滩上征服阅读清单的意志一样。

During the vernal and autumnal equinoxes, the sun is directly over the equator, so day and night are considered to be the same length.

在春期间，太阳直射赤道，因此白昼黑夜有着相同的长度。

The vernal equinox, in March, marks the beginning of spring in the Northern Hemisphere and the beginning of autumn in the Southern Hemisphere.

春在三月份，标志着北半球春季的开始，以及南半球季的开始。

And speaking of sunshine, today is the March equinox, also known as the vernal equinox in the northern hemisphere.

说到阳光，今天是三月昼夜平点，在北半球也称为春。

Ten-second trivia: The vernal equinox marks the start of what season?

十秒冷知识速答：春标志着什么季节的开始？

April Fools Day is also been linked to the vernal equinox and the start of spring.

愚人节也被用来庆祝春春天的开始。

A wish to shout and sing, As, filled with hope and gladness, We hail the vernal Spring.

我们多么想大声呼唤歌唱，我们呼唤春天来了，心中充满了希望喜悦。

Happening on March 20th this year, the vernal equinox marks the start of spring.

在今年的3月20，春标志了春天的开始。

It falls at the midpoint between the winter solstice and the spring or vernal equinox, making it the ideal time to consider when springtime might finally come.

它落在冬至春之间的中点，这使它成为考虑春天何时最终到来的理想时机。

And maybe that's why I'd never even heard of this place or vernal pools at all.

也许这就是为什么我从来没有听说过这个地方或春池的原因。

She explained to me that vernal pools are a type of ephemeral wetland, a habitat that's there one month, gone the next.

她向我解释说，春池是一种短暂的湿地——这种栖息地上个月在，下个月就不见了。

If there's one thing that unites a lot of the creatures living in vernal pools, it's their extreme lifestyle.

如果说有一件事将很多生活在春池中的生物连在一起，那就是它们极端的生活方式。

And in the case of vernal pools, because so many of them have already been destroyed, a jar sitting on the shelf here might be the only record left of the biodiversity that once existed in a particular pond.

就春池而言，由于许多春池已经被破坏，放在架子上的一个罐子可能是某个池塘曾经存在的生物多样性的唯一记。

The vernal pools are these temporary little ponds that form when it rains, and it turn into little oases that are home to a whole bunch of creatures, most iconic of which is the fairy shrimp.

春池是这些临时的小池塘，在下雨时形成，变成了小绿洲。春池是很多生物的家，其中最具代表性的是仙女虾。