in AM, use 美国英语用 kilometer
- N-COUNT 千米;公里
A kilometre is a metric unit of distance or length. One kilometre is a thousand metres and is equal to 0.62 miles.
- ...about twenty kilometres from the border...
离边界约20公里 - The fire destroyed some 40,000 square kilometres of forest.
大火烧毁了大约4万平方公里的森林。