kilometres per hour

简明释义

公里小时

英英释义

例句

1.Cyclists should maintain a speed of around 20 kilometres per hour for safety.

骑自行车的人应该保持大约20公里每小时的速度以确保安全。

2.In the city, cars usually go no faster than 50 kilometres per hour.

在城市里，汽车通常不会超过50公里每小时。

3.The speed limit on this highway is 100 kilometres per hour.

这条高速公路的限速是100公里每小时。

4.The train travels at an impressive speed of 300 kilometres per hour.

这列火车以每小时300公里的惊人速度行驶。

5.He was driving at a speed of 80 kilometres per hour when he got pulled over.

他以80公里每小时的速度开车时被警察拦下。

作文

Speed is a crucial aspect of our daily lives, influencing how we travel and interact with the world around us. One common unit of measurement for speed is kilometres per hour, which is widely used in many countries to indicate how fast vehicles can move. Understanding this term is essential for anyone who drives or travels, as it helps gauge travel times and ensures safety on the roads.The concept of kilometres per hour (每小时公里数) is straightforward: it represents the number of kilometres a vehicle can cover in one hour. For example, if a car is traveling at a speed of 100 kilometres per hour, it means that in one hour, the car will have covered 100 kilometres. This measurement is particularly useful for planning long journeys, as it allows drivers to estimate how long it will take to reach their destination.In many countries, speed limits are set in kilometres per hour, making it vital for drivers to be aware of these limits to ensure they adhere to traffic laws. For instance, urban areas may have speed limits of 50 kilometres per hour, while highways might allow speeds of up to 120 kilometres per hour. Observing these limits is important not only for legal reasons but also for the safety of all road users.Moreover, understanding kilometres per hour is beneficial when considering fuel efficiency. Cars often have optimal speeds at which they consume the least amount of fuel. For example, a vehicle may be most fuel-efficient at speeds between 80 and 100 kilometres per hour. Traveling significantly faster than this range can lead to increased fuel consumption, impacting both the environment and the driver’s wallet.In addition to personal vehicles, public transport systems also rely on the kilometres per hour measurement. Trains, buses, and trams often provide information about their speeds, allowing passengers to understand how quickly they can expect to arrive at their destinations. For instance, a train traveling at 200 kilometres per hour will cover a considerable distance in a short time, making it an efficient mode of transportation.Furthermore, in sports, particularly in motorsports, kilometres per hour is a critical metric for performance evaluation. Racing teams analyze their vehicles' speeds in kilometres per hour to optimize their designs and strategies for competitions. A small difference in speed can significantly impact race outcomes, making it an area of intense focus.In conclusion, the term kilometres per hour plays a significant role in various aspects of life, from everyday driving to competitive racing. It provides a clear and concise way to communicate speed, helping individuals make informed decisions about travel and safety. As we continue to navigate our fast-paced world, understanding this measurement will remain essential for everyone, whether they are driving a car, riding a train, or simply trying to estimate how long it will take to get somewhere. By being aware of kilometres per hour, we can enhance our travel experiences and contribute to safer roads for all.

速度是我们日常生活中一个至关重要的方面，影响着我们如何旅行以及与周围世界互动。一个常用的速度测量单位是每小时公里数，在许多国家广泛使用，以指示车辆的行驶速度。理解这个术语对于任何驾驶或旅行的人来说都是必不可少的，因为它有助于评估旅行时间并确保道路安全。每小时公里数（kilometres per hour）的概念很简单：它表示一辆车辆在一小时内可以行驶的公里数。例如，如果一辆车以100每小时公里数的速度行驶，这意味着该车在一小时内将行驶100公里。这个测量在规划长途旅行时特别有用，因为它允许驾驶者估算到达目的地所需的时间。在许多国家，限速是以每小时公里数来设定的，因此，驾驶者必须了解这些限制，以确保遵守交通法规。例如，城市地区的限速可能为50每小时公里数，而高速公路的限速可能高达120每小时公里数。遵守这些限制不仅出于法律原因，也为了所有道路使用者的安全。此外，理解每小时公里数在考虑燃油效率时也很有益。汽车通常在某些最佳速度下消耗最少的燃油。例如，一辆汽车在80到100每小时公里数之间的速度可能是最节能的。超过这一范围的速度行驶可能会导致燃油消耗增加，影响环境和驾驶者的经济支出。除了个人车辆外，公共交通系统也依赖于每小时公里数的测量。火车、公交车和有轨电车通常提供有关其速度的信息，使乘客能够理解他们到达目的地的速度。例如，一列以200每小时公里数行驶的火车将在短时间内覆盖相当大的距离，使其成为一种高效的交通方式。此外，在体育运动中，尤其是赛车运动中，每小时公里数是性能评估的关键指标。赛车团队分析其车辆的速度，以优化设计和比赛策略。速度的微小差异可能对比赛结果产生重大影响，因此这是一个高度关注的领域。总之，术语每小时公里数在生活的各个方面发挥着重要作用，从日常驾驶到竞技赛车。它提供了一种清晰简洁的方式来传达速度，帮助个人做出有关旅行和安全的明智决定。随着我们继续在快速发展的世界中导航，理解这一测量将对每个人都至关重要，无论他们是在开车、乘火车，还是仅仅试图估算到达某个地方所需的时间。通过了解每小时公里数，我们可以提升旅行体验，并为所有人贡献更安全的道路。