kilometer是什么意思，kilometer翻译

kilometer是什么意思，kilometer翻译

Kilometer: A Measure of Distance

In the metric system, the kilometer is the standard unit of distance. It is defined as 1,000 meters, and is commonly used to measure long distances, such as the lengths of roads, the distances between cities, and the circumferences of large bodies of water. The term "kilometer" is derived from the Greek words "kilo," meaning "thousand," and "meter," meaning "measure."

The kilometer was adopted as an official unit of length in 1958 by the General Conference on Weights and Measures. Prior to this, various units of length were used around the world, including the English mile, the French kilomètre, and the German kilometer. The metric system, which is based on the meter, was introduced in France in 1795 and has since been adopted by most countries around the world.

To measure a kilometer, a common method is to use a laser rangefinder or a GPS device. These tools can accurately measure the distance between two points, and are often used in surveying, construction, and outdoor sports. Another method is to use a measuring tape or a string, which can be laid out along the ground between the two points. For longer distances, a surveyor's wheel or a wheelbarrow can be used to measure the distance by counting the number of rotations.

In addition to measuring distances on land, the kilometer is also used in other contexts. For example, in astronomy, the distance between celestial objects is often measured in light