光年用英语怎么解释

来源：百度知道 编辑：UC知道 时间：2024/05/06 03:00:01

light-year
1光年是以每秒186000英里的速度走过一年的距离，约为6万亿英里。
A light year is the distance which light travels at186,000 miles per second in one year, namely6 million million miles.

光年light-year