kilometre is equal to 1,000 metres. Kilometres are commonly used for measuring longer distances, such as the length of a road or the distance between cities. For example, if you want to know how far it is from one place to another, you might see a sign that says "5 km to next city." This means that the next city is 5 kilometres away, which is the same as 5,000 metres! Kilometres make it easier to talk about long distances without having to count all those metres. 🏙️🚗

科普小知识 长度单位 公里与米