the quality of being able to live or last for ever

Many Americans believe in some kind of immortality of the soul. 许多美国人相信某种灵魂不灭的说法。

He sees cloning as the first step to achieving immortality. 他认为克隆是实现永生的第一步。

the quality of being very special and famous and therefore likely to be remembered for a long time

The Wright brothers achieved immortality with the first powered flight in 1903. 莱特兄弟1903年做出不朽成就，发明了第一架动力飞机。

"Video Killed the Radio Star" achieved pop immortality by being the first song ever played on MTV. “录像杀死了电台明星”成为 MTV 播放的第一首歌曲，获得了流行音乐的不朽地位。