Greenwich meridian

简明释义

格林经线

英英释义

例句

1.The Greenwich meridian divides the eastern and western hemispheres of the Earth.

格林威治子午线将地球的东西半球分开。

2.In geography class, we learned about the significance of the Greenwich meridian in global navigation.

在地理课上，我们学习了格林威治子午线在全球导航中的重要性。

3.When sailing across the Atlantic, navigators often reference the Greenwich meridian to determine their longitude.

在横渡大西洋时，航海家通常参考格林威治子午线来确定他们的经度。

4.The time in London is based on the Greenwich meridian, which is considered the starting point for Coordinated Universal Time (UTC).

伦敦的时间基于格林威治子午线，它被视为协调世界时（UTC）的起点。

5.The Greenwich meridian is located at zero degrees longitude and runs through Greenwich, London.

格林威治子午线位于零度经线，穿过伦敦的格林威治。

作文

The concept of the Greenwich meridian is fundamental in understanding global geography and timekeeping. The Greenwich meridian, also known as the Prime Meridian, is the line of longitude that is defined to be 0 degrees. It runs from the North Pole to the South Pole and passes through Greenwich, a district in London, England. This meridian was established at the International Meridian Conference held in 1884, where it was decided that the world would use this line as the starting point for measuring longitude. Before the establishment of the Greenwich meridian, various countries used their own meridians, which made navigation and timekeeping complicated.Understanding the significance of the Greenwich meridian requires a look into its historical context. During the 19th century, advancements in navigation and exploration demanded a standardized system for measuring time and location. Sailors relied heavily on accurate maps and the ability to determine their position at sea. The invention of the marine chronometer by John Harrison allowed sailors to calculate their longitude accurately, but without a universal reference point, discrepancies remained. The adoption of the Greenwich meridian provided a solution, serving as a common reference for navigators worldwide.The implications of the Greenwich meridian extend beyond navigation; it plays a crucial role in timekeeping. The world is divided into 24 time zones, each generally 15 degrees apart in longitude. The time at the Greenwich meridian is known as Greenwich Mean Time (GMT), which serves as the baseline for other time zones. For instance, New York is typically GMT-5, while Tokyo is GMT+9. This system allows for a synchronized global schedule, essential for international travel, communication, and commerce.In addition to its practical applications, the Greenwich meridian has cultural significance. The Royal Observatory in Greenwich, where the meridian is located, attracts millions of tourists each year. Visitors can stand with one foot in the Eastern Hemisphere and the other in the Western Hemisphere, experiencing a unique geographical phenomenon. The observatory also houses historical artifacts related to astronomy and navigation, making it a site of educational importance.Moreover, the Greenwich meridian symbolizes the interconnectedness of our world. In an era where globalization is prevalent, understanding how we measure time and space is crucial. The Greenwich meridian serves as a reminder of our shared history and the collaborative efforts that led to the establishment of a standardized global system. As technology continues to evolve, the relevance of the Greenwich meridian remains steadfast, influencing modern navigation systems such as GPS, which rely on precise measurements of latitude and longitude.In conclusion, the Greenwich meridian is more than just a line on a map; it represents a significant milestone in human history. From its role in navigation to its impact on global timekeeping, the Greenwich meridian has shaped the way we understand our world. As we continue to explore new frontiers, the principles established by the Greenwich meridian will undoubtedly guide us in our endeavors, reminding us of the importance of collaboration and standardization in our increasingly interconnected society.

“格林威治子午线”这一概念在理解全球地理和时间测量中至关重要。“格林威治子午线”，也称为本初子午线，是定义为0度的经度线。它从北极延伸到南极，并穿过英国伦敦的一个地区——格林威治。该子午线是在1884年举行的国际子午线会议上确定的，会议决定世界将以这一线作为测量经度的起点。在“格林威治子午线”建立之前，各国使用自己的子午线，这使得导航和时间测量变得复杂。理解“格林威治子午线”的重要性需要回顾其历史背景。在19世纪，航海和探索的进步要求对时间和位置进行标准化的测量系统。水手们在海上严重依赖准确的地图和确定自己位置的能力。约翰·哈里森发明的海洋计时器使水手能够准确计算他们的经度，但没有一个通用的参考点，仍然存在差异。“格林威治子午线”的采用提供了一个解决方案，为全球导航员提供了一个共同的参考。“格林威治子午线”的影响不仅限于导航；它在时间测量中也发挥着至关重要的作用。世界被划分为24个时区，每个时区大致相隔15度经度。“格林威治子午线”的时间被称为格林威治标准时间（GMT），它作为其他时区的基准。例如，纽约通常是GMT-5，而东京是GMT+9。这个系统允许全球日程的同步，对于国际旅行、通信和商业至关重要。除了实际应用外，“格林威治子午线”还有文化意义。位于格林威治的皇家天文台是子午线所在之处，每年吸引数百万游客。游客可以一只脚站在东半球，另一只脚站在西半球，体验独特的地理现象。天文台还收藏与天文学和导航相关的历史文物，使其成为教育的重要场所。此外，“格林威治子午线”象征着我们世界的互联性。在全球化盛行的时代，理解我们如何测量时间和空间至关重要。“格林威治子午线”提醒我们共同的历史以及为了建立标准化全球系统而进行的合作努力。随着科技的不断发展，“格林威治子午线”的相关性依然坚定，影响着现代导航系统，如GPS，这些系统依赖于精确的纬度和经度测量。总之，“格林威治子午线”不仅仅是一张地图上的一条线；它代表了人类历史上的一个重要里程碑。从导航中的作用到对全球时间测量的影响，“格林威治子午线”塑造了我们理解世界的方式。随着我们继续探索新的前沿，“格林威治子午线”所确立的原则无疑会指导我们的努力，提醒我们在日益互联的社会中合作和标准化的重要性。