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春分:春天的第一天 First day of Spring 2017

美语俱乐部2018-05-15 14:46:11

读完本文,学会 equinox 这个词就可以啦。这个词的中文意思就是昼夜平分点,在拉丁语里就是equal night 的意思是“相等的夜晚”,equi= equal, nox= night。  所以这个看起来很奇怪的单词其实很简单, 对吧? 另外,这个词的发音是 :['ikwɪnɑks],重音在前面。   


Aguide to what the spring equinox means and how you can make the most of it.

When did spring start then?

The astronomical spring in the Northern Hemisphere began on Monday, March 20 and will end on Wednesday, June 21.

The spring (vernal) equinox in the Northern Hemisphere is also known as the March equinox. It's called the "autumnal (fall) equinox" in the Southern Hemisphere.

The March equinox marks the moment the Sun crosses the celestial equator – the imaginary line in the sky above the Earth’s equator – from south to north. This happens on March 19, 20 or 21 every year.

三月的昼夜平分点表明此刻太阳正穿过天界赤道的时刻 - 这是一条在地球赤道上空的从南到北的虚线。这发生在每年的3月19日、20日或21日。

Why is it called the spring 'equinox'?

Since night and day are nearly exactly the same length – 12 hours – all over the world the event is called the equinox, which in Latin, literally means 'equal night' (equi – equal, and nox – night).

春分这一天,不论纬度高低,全世界所有地方的白天时间都多不多等于黑夜时间,都是12个小时。

In reality though, equinoxes do not have exactly 12 hours of daylight. Solstices and equinoxes mark key stages in the astronomical cycle of the earth. In a year there are two equinoxes (spring and autumn) and two solstices (summer and winter).

至日和分日是地球运行中很重要的标志,一年当中有两个昼夜平分点,就是春分和秋分,还有两个至日,分别是夏至和冬至。


The dates of the equinoxes and solstices aren't fixed due to the Earth's elliptical orbit of the sun. The Earth's orbit around the sun means that in early January, the sun is closest (known as perihelion) and in early July it is most distant (aphelion).

由于地球绕着太阳是以椭圆形轨道运行的,所以分日和至日的日期并不固定。


We use the equinox to mark the change of seasons, as the balance of light shifts to make for longer days or nights. It usually means that it's time to hunker down for colder seasons, or time to rise and shine for warmer ones.

我们使用分日来标记季节的变化,因为光的平衡变化产生了更长的白天或夜晚。这通常意味时间变短的寒冷季节,或时间变长的温暖季节。


You may also notice that on the equinox, the sun rises directly in the east and sets directly in the west, whereas at other times in the year, it appears off-centre if you're facing those directions.

你也可能注意到,在平分点上,太阳在正东部升起,在正西落下,而在其他时候,如果你面对那些方向,它会出现偏心。





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