Greenwich mean time

简明释义

格林尼治标准时

英英释义

例句

1.To synchronize our watches, we set them to Greenwich mean time, or 格林威治标准时间.

为了同步我们的手表，我们将它们设置为格林威治标准时间。

2.The conference will start at 10 AM Greenwich mean time, or 格林威治标准时间.

会议将在上午10点格林威治标准时间开始。

3.In aviation, flight times are often listed in Greenwich mean time, which means 格林威治标准时间.

在航空业，航班时间通常以格林威治标准时间列出。

4.The train schedule is based on Greenwich mean time, which is 格林威治标准时间.

火车时刻表是基于格林威治标准时间的。

5.When planning international calls, remember to convert to Greenwich mean time to avoid confusion, which is 格林威治标准时间.

在计划国际电话时，记得转换为格林威治标准时间以避免混淆。

作文

The concept of time is fundamental to our daily lives, guiding our schedules and activities. One of the most significant time standards used globally is Greenwich Mean Time, often abbreviated as GMT. 格林威治标准时间 is the mean solar time at the Royal Observatory in Greenwich, London, which has been established as the world's timekeeping reference since the late 19th century. Understanding Greenwich Mean Time is crucial for various reasons, especially in our increasingly interconnected world.First and foremost, Greenwich Mean Time serves as a baseline for time zones around the globe. The Earth is divided into 24 time zones, each one generally 15 degrees apart in longitude. This division corresponds to the Earth's rotation, with each zone representing one hour of time. When we refer to a specific time in relation to GMT, it allows for a standardized way of communicating time across different regions. For instance, New York operates at GMT-5 during standard time, while London operates at GMT+0. This system ensures that regardless of where you are, you can coordinate activities and events with others worldwide.Another important aspect of Greenwich Mean Time is its role in navigation and astronomy. Before the advent of modern technology, sailors relied heavily on accurate timekeeping to determine their position at sea. By comparing local noon (when the sun is highest in the sky) to Greenwich Mean Time, navigators could calculate their longitude and ensure they remained on course. In astronomy, Greenwich Mean Time is still used to schedule observations and coordinate events, such as eclipses or meteor showers, which are visible from different parts of the world.In addition to its practical applications, Greenwich Mean Time has cultural significance. The establishment of GMT marked a pivotal moment in the history of timekeeping. It was adopted as the international standard at the International Meridian Conference held in Washington, D.C., in 1884. This conference aimed to create a uniform system of timekeeping that would facilitate global trade and communication. The decision to use the meridian passing through Greenwich was based on the fact that a majority of the world's shipping routes were already using this reference point. As a result, Greenwich Mean Time became synonymous with precision and reliability.Moreover, the advent of Coordinated Universal Time (UTC) has not diminished the importance of Greenwich Mean Time. UTC is now the standard for civil timekeeping, but it is closely related to GMT. Both systems are used interchangeably in many contexts, although UTC is more precise due to its atomic timekeeping methods. Nevertheless, Greenwich Mean Time remains an essential reference point, particularly in the fields of aviation, telecommunications, and computer networking, where synchronization is vital.In conclusion, Greenwich Mean Time is more than just a time reference; it is a critical component of global communication, navigation, and cultural history. Understanding Greenwich Mean Time allows us to appreciate the complexities of timekeeping and its impact on our interconnected lives. As we continue to navigate a world that relies heavily on precise timing, the significance of Greenwich Mean Time will undoubtedly endure, reminding us of our shared temporal framework in an ever-evolving society.

时间的概念是我们日常生活中的基本要素，指导着我们的日程和活动。全球使用的最重要的时间标准之一是格林威治标准时间，通常缩写为GMT。格林威治标准时间是伦敦格林威治皇家天文台的平均太阳时间，自19世纪末以来，它已被确立为全球时间参考。理解格林威治标准时间对于各种原因都是至关重要的，特别是在我们这个日益互联的世界中。首先，格林威治标准时间作为全球时区的基准。地球被划分为24个时区，每个时区通常相隔15度经度。这一划分与地球的自转相对应，每个时区代表一个小时的时间。当我们提到与GMT相关的特定时间时，它为不同地区之间的时间交流提供了一种标准化的方式。例如，纽约在标准时间下的时区为GMT-5，而伦敦则为GMT+0。该系统确保无论你身处何地，都可以与全球其他人协调活动和事件。格林威治标准时间的另一个重要方面是它在导航和天文学中的作用。在现代技术出现之前，水手们非常依赖准确的时间记录来确定他们在海上的位置。通过将当地中午（太阳在天空中最高的时候）与格林威治标准时间进行比较，导航员可以计算他们的经度并确保他们保持在航线上。在天文学中，格林威治标准时间仍然用于安排观测和协调事件，例如在世界不同地方可见的日食或流星雨。除了其实际应用外，格林威治标准时间还具有文化意义。GMT的建立标志着时间记录历史上的一个重要时刻。它是在1884年华盛顿特区举行的国际子午线会议上被采纳为国际标准的。该会议旨在创建一个统一的时间记录系统，以促进全球贸易和通信。选择经过格林威治的子午线作为参考点的决定是基于世界大多数航运路线已经使用这一参考点的事实。因此，格林威治标准时间成为精确和可靠的代名词。此外，协调世界时（UTC）的出现并没有减少格林威治标准时间的重要性。UTC现在是民用时间记录的标准，但它与GMT密切相关。在许多情况下，这两种系统可以互换使用，尽管由于其原子时间记录方法，UTC更为精确。然而，格林威治标准时间仍然是一个重要的参考点，特别是在航空、通信和计算机网络等领域，在这些领域中，时间同步至关重要。总之，格林威治标准时间不仅仅是一个时间参考；它是全球沟通、导航和文化历史的重要组成部分。理解格林威治标准时间使我们能够欣赏时间记录的复杂性及其对我们互联生活的影响。随着我们继续在一个高度依赖精确时间的世界中航行，格林威治标准时间的重要性无疑会持续存在，提醒我们在不断发展的社会中共享的时间框架。