A cure for that disease is still probably light-years away.想要治愈那种病，恐怕是遥远的未来的事。I had not eaten anything hot since my last dinner with Sean. It seemed light-years away.上次和肖恩吃过饭后我就一直没吃过热菜热饭。好像已经过了很久很久似的。This new technology puts the company light-years ahead of its competitors.这项新的技术让公司遥遥领先于其竞争对手。