mean tropical year

简明释义

平回归年

英英释义

例句

1.The concept of the mean tropical year 平均回归年 is crucial for understanding Earth's orbit around the Sun.

理解地球围绕太阳的轨道，mean tropical year 平均回归年的概念至关重要。

2.The average length of a mean tropical year 平均回归年 is about 365.2422 days.

一个mean tropical year 平均回归年 的平均长度约为365.2422天。

3.Astronomers use the mean tropical year 平均回归年 as a standard measure for celestial events.

天文学家使用mean tropical year 平均回归年作为天文事件的标准测量。

4.Leap years are introduced to account for the slight difference in the mean tropical year 平均回归年 and the calendar year.

闰年是为了弥补mean tropical year 平均回归年和公历年的微小差异而引入的。

5.Calendars are often adjusted based on the mean tropical year 平均回归年 to ensure they stay in sync with the seasons.

日历通常根据mean tropical year 平均回归年进行调整，以确保它们与季节保持同步。

作文

The concept of the mean tropical year, known in scientific terms as the average time it takes for the Earth to complete one orbit around the Sun, is fundamental to our understanding of time and seasons. This period is approximately 365.2422 days long. The mean tropical year is significant because it helps us align our calendar with the Earth's position in relation to the Sun, ensuring that our seasons remain consistent over the years.Historically, various civilizations have attempted to measure the length of the year. The ancient Egyptians, for example, created a calendar based on a 365-day year, which eventually led to discrepancies in the seasons. They did not account for the additional fraction of a day, resulting in a gradual shift in their agricultural practices. This highlights the importance of accurately understanding the mean tropical year for planning and survival.In modern times, the Gregorian calendar was introduced by Pope Gregory XIII in 1582 to correct the inaccuracies of the Julian calendar, which had a year length of 365.25 days. The Gregorian calendar incorporates leap years to accommodate the extra 0.2422 days of the mean tropical year. This adjustment ensures that our calendars remain synchronized with the seasons, preventing the drift that plagued earlier systems.Understanding the mean tropical year is not just an academic exercise; it has practical implications for agriculture, ecology, and even our daily lives. Farmers rely on seasonal changes to plant and harvest crops, while ecologists study how shifts in climate can affect the timing of natural events such as flowering and migration. If our calendar were not aligned with the mean tropical year, these natural cycles could be disrupted, leading to food shortages and ecological imbalances.Moreover, the mean tropical year plays a crucial role in astronomical observations and calculations. Astronomers use this measurement to predict celestial events, such as eclipses and planetary alignments. By understanding the mean tropical year, scientists can make accurate predictions about the movement of celestial bodies and their effects on Earth. This knowledge enhances our understanding of the universe and our place within it.In conclusion, the mean tropical year is a vital concept that underpins our calendar system, agricultural practices, and scientific observations. As we continue to study and understand our planet's relationship with the Sun, the mean tropical year will remain a key reference point in our quest for knowledge. Recognizing its significance allows us to appreciate the intricate connections between time, nature, and human activity. Without this understanding, we would struggle to maintain harmony with the natural world, ultimately impacting our survival and quality of life.

“平均热带年”（mean tropical year）的概念，即地球绕太阳公转一周所需的平均时间，是我们理解时间和季节的基础。这一周期大约为365.2422天。平均热带年的重要性在于它帮助我们将日历与地球相对于太阳的位置对齐，确保我们的季节在多年间保持一致。历史上，各个文明都试图测量年的长度。例如，古埃及人创建了一个基于365天的日历，这最终导致了季节上的偏差。他们没有考虑到额外的零点几天，导致农业实践逐渐出现偏移。这突显了准确理解平均热带年在规划和生存中的重要性。现代社会中，公元1582年，教皇格里高利十三世引入了格里高利历，以纠正儒略历的误差，后者的年长度为365.25天。格里高利历通过闰年来适应平均热带年的额外0.2422天。这一调整确保我们的日历与季节保持同步，防止了早期系统所困扰的漂移现象。理解平均热带年不仅是学术上的探讨；它对农业、生态甚至我们的日常生活都有实际影响。农民依赖季节变化来种植和收获作物，而生态学家研究气候变化如何影响自然事件的时机，如开花和迁徙。如果我们的日历没有与平均热带年对齐，这些自然循环可能会受到干扰，从而导致粮食短缺和生态失衡。此外，平均热带年在天文学观察和计算中也发挥着关键作用。天文学家利用这一测量来预测天文事件，如日食和行星排列。通过理解平均热带年，科学家可以准确预测天体的运动及其对地球的影响。这一知识增强了我们对宇宙及我们在其中位置的理解。总之，平均热带年是一个至关重要的概念，它支撑着我们的日历系统、农业实践和科学观察。随着我们继续研究和理解地球与太阳的关系，平均热带年将始终是我们追求知识的关键参考点。认识到它的重要性使我们能够欣赏时间、自然和人类活动之间复杂的联系。如果没有这种理解，我们将难以与自然世界保持和谐，最终影响我们的生存和生活质量。