Greenwich mean time

简明释义

格林尼治平均时

英英释义

例句

1.Many countries set their clocks based on Greenwich mean time.

许多国家的时钟是根据格林威治标准时间来设定的。

2.The meeting is scheduled for 10 AM Greenwich mean time next Monday.

会议定于下周一上午10点格林威治标准时间举行。

3.When planning international calls, remember to check the Greenwich mean time to avoid confusion.

在计划国际电话时，记得查看格林威治标准时间以避免混淆。

4.To convert local time to Greenwich mean time, subtract five hours if you are in New York.

如果你在纽约，要将当地时间转换为格林威治标准时间，需要减去五个小时。

5.The flight from New York to London departs at 5 PM Greenwich mean time (GMT).

从纽约到伦敦的航班在格林威治标准时间（GMT）下午5点起飞。

作文

The concept of time is fundamental to our daily lives, influencing everything from our work schedules to social interactions. One of the most important standards of timekeeping is known as Greenwich Mean Time. This term refers to the mean solar time at the Royal Observatory in Greenwich, London, and it has been used as a global time standard since the late 19th century. Understanding Greenwich Mean Time is crucial for various reasons, including its role in navigation, communication, and international relations.Historically, the need for a standardized time arose with the expansion of railroads and telegraphs. As different regions operated on their local times, coordinating schedules became increasingly complicated. In 1884, the International Meridian Conference established Greenwich Mean Time as the world's time standard, designating the Prime Meridian at Greenwich as the starting point for measuring time zones. This decision allowed for a uniform system that could be adopted globally.One of the most significant impacts of Greenwich Mean Time is in the field of navigation. Before the adoption of this standard, sailors relied on celestial navigation, which was often imprecise due to the lack of accurate timekeeping devices. The invention of the marine chronometer enabled sailors to determine their longitude at sea accurately by comparing their local time with Greenwich Mean Time. This advancement revolutionized maritime travel, making it safer and more reliable.In addition to navigation, Greenwich Mean Time plays a vital role in global communication. In today's interconnected world, people from different time zones need to coordinate meetings, phone calls, and online events. By referencing Greenwich Mean Time, individuals can easily convert their local times to ensure everyone is on the same page. This standardization helps avoid confusion and enhances collaboration across borders.Furthermore, Greenwich Mean Time is essential in international relations. Many treaties and agreements stipulate deadlines and meeting times based on this time standard. For instance, when countries negotiate trade deals or climate agreements, they often refer to Greenwich Mean Time to ensure clarity and precision in timing. This practice underscores the importance of having a universally accepted time reference in diplomatic discussions.Despite its significance, Greenwich Mean Time is not without its challenges. As technology advances, the need for even more precise time measurements has emerged. Atomic clocks, which provide an accuracy of a billionth of a second, have led to the introduction of Coordinated Universal Time (UTC), which is based on Greenwich Mean Time but incorporates leap seconds to account for variations in the Earth's rotation. This evolution highlights the ongoing importance of timekeeping in our modern world.In conclusion, Greenwich Mean Time is more than just a measure of time; it is a foundational element that facilitates navigation, communication, and international relations. Its establishment marked a significant milestone in our ability to coordinate activities across vast distances. As we continue to advance technologically, the relevance of Greenwich Mean Time remains strong, adapting to meet the demands of an ever-changing world. Understanding this concept is essential for anyone looking to navigate the complexities of our global society, as it serves as the backbone of our temporal framework.

时间的概念是我们日常生活的基础，影响着从工作安排到社交互动的一切。最重要的时间标准之一被称为格林威治标准时间。这个术语指的是位于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，它一直被用作全球时间标准。理解格林威治标准时间至关重要，原因有很多，包括它在导航、通信和国际关系中的作用。历史上，随着铁路和电报的发展，对标准化时间的需求应运而生。由于不同地区各自使用当地时间，协调时间表变得越来越复杂。在1884年，国际子午线会议确立了格林威治标准时间作为世界时间标准，指定格林威治的本初子午线为测量时区的起点。这一决定允许全球采用统一的系统。格林威治标准时间的一个重要影响是在导航领域。在采用这一标准之前，水手依靠天文导航，由于缺乏准确的计时设备，这种方法往往不够精确。海洋计时器的发明使水手能够通过比较他们的当地时间与格林威治标准时间，准确确定他们在海上的经度。这一进步彻底改变了海洋旅行，使其更加安全可靠。除了导航，格林威治标准时间在全球通信中也发挥着至关重要的作用。在当今相互联系的世界中，不同时间区的人们需要协调会议、电话和在线活动。通过参考格林威治标准时间，个人可以轻松地将自己的当地时间转换，以确保每个人都在同一页面上。这种标准化有助于避免混淆，并增强跨国合作。此外，格林威治标准时间在国际关系中也是必不可少的。许多条约和协议规定的截止日期和会议时间都是基于这一时间标准。例如，当各国谈判贸易协议或气候协议时，他们通常会参考格林威治标准时间以确保时间上的清晰和准确。这一做法强调了在外交讨论中拥有一个普遍接受的时间参考的重要性。尽管格林威治标准时间具有重要意义，但它并非没有挑战。随着技术的进步，对更精确时间测量的需求也随之出现。原子钟提供的准确度达到十亿分之一秒，促使引入协调世界时（UTC），该时间基于格林威治标准时间，但包含了跳秒，以补偿地球自转中的变化。这一演变凸显了时间计量在现代世界中的持续重要性。总之，格林威治标准时间不仅仅是时间的衡量；它是一个基础元素，促进了导航、通信和国际关系的进行。它的建立标志着我们能够在广阔距离上协调活动的重大里程碑。随着我们继续技术进步，格林威治标准时间的相关性仍然很强，适应不断变化的世界的需求。理解这一概念对于任何希望驾驭我们全球社会复杂性的人来说都是必不可少的，因为它是我们时间框架的支柱。