mean equinox

简明释义

平春分点

英英释义

例句

1.The mean equinox occurs around March 20 each year.

每年大约在3月20日发生平均春分。

2.The mean equinox is crucial for determining the start of spring in many cultures.

在许多文化中，平均春分对于确定春季的开始至关重要。

3.During the mean equinox, day and night are approximately equal in length.

在平均春分期间，昼夜长度大致相等。

4.Astronomers often refer to the mean equinox when discussing celestial events.

天文学家在讨论天文事件时常常提到平均春分。

5.The calculations for the calendar are based on the position of the sun at the mean equinox.

日历的计算是基于太阳在平均春分时的位置。

作文

The concept of the mean equinox refers to a specific point in time when day and night are approximately equal in duration. This phenomenon occurs twice a year, during the spring and autumn equinoxes. Understanding the mean equinox is crucial for various fields, including astronomy, agriculture, and even cultural traditions. Astronomically, the mean equinox is significant because it marks the moments when the sun crosses the celestial equator. This transition influences the length of daylight and darkness experienced on Earth. For instance, during the spring equinox, which typically occurs around March 20th or 21st, the Northern Hemisphere begins to tilt towards the sun, leading to longer days and warmer temperatures. Conversely, the autumn equinox, occurring around September 22nd or 23rd, signals the onset of shorter days and the cooling of temperatures as the Northern Hemisphere tilts away from the sun.Agriculturally, the mean equinox plays a vital role in determining planting and harvesting times. Farmers often rely on the equinoxes to signal the change of seasons, which directly affects crop cycles. The arrival of spring, marked by the mean equinox, prompts farmers to begin planting their crops, while the autumn equinox indicates the time to harvest. This connection between the equinoxes and agricultural practices highlights the importance of understanding these celestial events.Culturally, the mean equinox has been celebrated in various societies throughout history. Many cultures have festivals and rituals that honor the balance of light and dark. For example, the Persian New Year, known as Nowruz, coincides with the spring equinox and symbolizes rebirth and renewal. Similarly, in some Native American traditions, the equinoxes are times for reflection and gratitude, emphasizing the harmony between nature and humanity.In conclusion, the mean equinox is not just a scientific term; it encompasses a wide range of implications across different domains. From its astronomical significance to its impact on agriculture and cultural practices, the mean equinox serves as a reminder of the intricate relationship between the Earth and the cosmos. By understanding this concept, we can better appreciate the natural rhythms that govern our lives and the world around us. As we observe the equinoxes each year, we are reminded of the balance between light and darkness, growth and decay, and the continuous cycle of life itself.

“平均春分”这个概念指的是一天中白天和黑夜大致相等的特定时刻。这种现象一年发生两次，分别是在春分和秋分。理解“平均春分”对于天文学、农业，甚至文化传统等多个领域至关重要。在天文学上，“平均春分”是一个重要的标志，因为它标志着太阳穿越天球赤道的时刻。这一转变影响着地球上白昼和黑夜的长度。例如，春分通常发生在3月20日或21日，这时北半球开始朝向太阳倾斜，导致白昼变长，气温升高。相反，秋分发生在9月22日或23日，标志着北半球开始远离太阳，白昼变短，气温下降。在农业上，“平均春分”在决定播种和收获时间方面起着至关重要的作用。农民们常常依赖于春分和秋分来指示季节的变化，这直接影响到作物的生长周期。春分的到来，意味着农民开始播种，而秋分则指示着收获的时机。这种春分与农业实践之间的联系突显了理解这些天文事件的重要性。在文化上，“平均春分”在历史上被许多社会所庆祝。许多文化都有庆祝光与暗平衡的节日和仪式。例如，波斯新年（Nowruz）恰好与春分重合，象征着重生和更新。同样，在一些美洲原住民的传统中，春分和秋分是反思和感恩的时刻，强调了自然与人类之间的和谐。总之，“平均春分”不仅仅是一个科学术语；它在不同领域中包含了广泛的意义。从其天文学的重要性到对农业和文化实践的影响，“平均春分”提醒我们地球与宇宙之间错综复杂的关系。通过理解这一概念，我们可以更好地欣赏支配我们生活和周围世界的自然节奏。当我们每年观察春分和秋分时，我们被提醒光与暗、成长与衰退，以及生命持续循环之间的平衡。