tropical year

简明释义

回归年

英英释义

例句

1.Farmers often plan their planting schedules based on the tropical year to maximize crop yields.

农民通常根据回归年来规划种植时间表，以最大化作物产量。

2.Due to the Earth's axial precession, the length of the tropical year changes slightly over time.

由于地球轴向进动，回归年的长度随时间略有变化。

3.Astronomers measure the tropical year to calculate the timing of seasons accurately.

天文学家测量回归年以准确计算季节的时间。

4.The Gregorian calendar is designed around the tropical year to keep our months aligned with the seasons.

公历是围绕回归年设计的，以使我们的月份与季节保持一致。

5.The length of a tropical year is approximately 365.24 days, which is why we add a leap day every four years.

一个回归年的长度大约是365.24天，这就是我们每四年增加一个闰日的原因。

作文

The concept of a tropical year refers to the time it takes for the Earth to complete one full orbit around the Sun, relative to the cycle of the seasons. Specifically, a tropical year is approximately 365.2422 days long. This measurement is crucial for understanding how we organize our calendar and the changing of the seasons. The tropical year is slightly shorter than the sidereal year, which is about 365.256 days, because the Earth is also moving in its orbit around the Sun while the Sun moves through the stars. Understanding the tropical year is essential for various fields, including astronomy, agriculture, and even climate science. For instance, farmers need to know the timing of seasons to plant and harvest crops effectively. If they rely solely on the calendar without considering the tropical year, they might plant too early or too late, resulting in poor yields. Moreover, the tropical year influences weather patterns and ecosystems, making it a vital factor in environmental studies. One interesting aspect of the tropical year is how it affects our calendars. The Gregorian calendar, which is widely used today, was designed to approximate the tropical year. To keep our calendar in sync with the seasons, we add a leap day every four years, except for years that are divisible by 100 but not by 400. This adjustment helps maintain the alignment of our calendar with the tropical year over centuries. Without such adjustments, our calendar would drift over time, causing significant discrepancies between the months and the actual seasons. Additionally, the tropical year has cultural significance in many societies. Various festivals and agricultural practices are based on the seasonal changes that occur within this timeframe. For example, the timing of harvest festivals often aligns with specific points in the tropical year, celebrating the abundance of food that corresponds with the changing seasons. In conclusion, the tropical year is a fundamental concept that underpins our understanding of time, agriculture, and seasonal changes. By recognizing its importance, we can appreciate how it shapes our lives, from the calendars we use to the agricultural practices we follow. The tropical year is not just a measure of time; it is a reflection of the intricate relationship between Earth and the Sun, influencing everything from weather patterns to cultural traditions. As we continue to study and understand the tropical year, we gain deeper insights into the natural world and our place within it.

“热带年”这一概念指的是地球围绕太阳完成一整圈所需的时间，相对于季节的周期。具体而言，一个“热带年”大约为365.2422天。这一测量对于理解我们如何组织日历和季节变化至关重要。“热带年”比恒星年稍短，后者大约为365.256天，因为地球在围绕太阳运动的同时，太阳也在恒星之间移动。理解“热带年”对于多个领域至关重要，包括天文学、农业乃至气候科学。例如，农民需要了解季节的时机，以有效地种植和收获作物。如果他们单靠日历而不考虑“热带年”，可能会过早或过晚种植，导致产量不佳。此外，“热带年”还影响天气模式和生态系统，使其成为环境研究中的一个重要因素。“热带年”的一个有趣方面是它如何影响我们的日历。如今广泛使用的格里历日历旨在近似“热带年”。为了使我们的日历与季节保持同步，我们每四年增加一个闰日，但对于能被100整除而不能被400整除的年份则不加。这一调整帮助我们在几个世纪内保持日历与“热带年”的一致性。如果没有这样的调整，我们的日历将随着时间的推移而漂移，导致月份与实际季节之间出现显著差异。此外，“热带年”在许多社会中具有文化意义。各种节日和农业实践基于在这一时间框架内发生的季节变化。例如，丰收节的时间往往与“热带年”的特定时点相吻合，庆祝与季节变化相关的食物丰收。总之，“热带年”是一个基本概念，支撑着我们对时间、农业和季节变化的理解。通过认识到它的重要性，我们可以欣赏它如何塑造我们的生活，从我们使用的日历到我们遵循的农业实践。“热带年”不仅仅是时间的度量；它反映了地球与太阳之间复杂的关系，影响着从天气模式到文化传统的一切。随着我们继续研究和理解“热带年”，我们对自然世界及我们在其中的位置有了更深入的见解。